Add full flow script example

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

Cargo.toml

@@ -16,3 +16,10 @@ redis = { version = "0.32.5", features = [
 ] }
 jsonrpsee = { version = "0.26.0", features = ["server", "macros"] }
 async-trait = "0.1.83"
+# HTTP client to call Mycelium JSON-RPC
+reqwest = { version = "0.12.7", features = ["json", "rustls-tls"] }
+# Base64 encoding for message payloads
+base64 = "0.22.1"
+# Error derive for clean error types
+thiserror = "2.0.16"
+tracing-subscriber = { version = "0.3.18", features = ["env-filter", "fmt"] }

scripts/jsonrpc_demo.py

@@ -0,0 +1,361 @@
+#!/usr/bin/env python3
+"""
+Demo script for HeroCoordinator JSON-RPC API.
+- Creates an actor
+- Verifies by loading the actor
+- Creates a context with the actor as admin/reader/executor
+- Creates three jobs with dependencies
+- Creates a flow referencing those jobs
+- Fetches and prints the flow DAG
+
+Usage:
+  COORDINATOR_URL=http://127.0.0.1:9652 python3 scripts/jsonrpc_demo.py
+Defaults to http://127.0.0.1:9652 if COORDINATOR_URL is not set.
+"""
+import os
+import json
+import sys
+from urllib import request, error
+from typing import Any, Dict, List, Tuple
+
+JSONRPC_VERSION = "2.0"
+
+class JsonRpcClient:
+    def __init__(self, url: str):
+        self.url = url.rstrip("/")
+        self._id = 0
+
+    def call(self, method: str, params: Dict[str, Any]) -> Any:
+        self._id += 1
+        payload = {
+            "jsonrpc": JSONRPC_VERSION,
+            "id": self._id,
+            "method": method,
+            "params": params,
+        }
+        data = json.dumps(payload).encode("utf-8")
+        req = request.Request(self.url, data=data, headers={"Content-Type": "application/json"})
+        try:
+            with request.urlopen(req) as resp:
+                body = resp.read()
+        except error.HTTPError as e:
+            try:
+                details = e.read().decode("utf-8", "ignore")
+            except Exception:
+                details = ""
+            raise RuntimeError(f"HTTP error {e.code}: {details}") from e
+        except error.URLError as e:
+            raise RuntimeError(f"URL error: {e.reason}") from e
+
+        try:
+            obj = json.loads(body.decode("utf-8"))
+        except Exception as e:
+            raise RuntimeError(f"Invalid JSON response: {body!r}") from e
+
+        # JSON-RPC single response expected
+        if isinstance(obj, list):
+            raise RuntimeError("Batch responses are not supported in this demo")
+
+        if obj.get("error"):
+            raise RuntimeError(f"RPC error: {json.dumps(obj['error'])}")
+
+        return obj.get("result")
+
+def print_header(title: str):
+    print("\n" + "=" * 80)
+    print(title)
+    print("=" * 80)
+
+def pretty_print(obj: Any):
+    print(json.dumps(obj, indent=2, sort_keys=True))
+
+def summarize_dag(dag: Dict[str, Any]):
+    print_header("Flow DAG Summary")
+    flow_id = dag.get("flow_id")
+    caller_id = dag.get("caller_id")
+    context_id = dag.get("context_id")
+    print(f"flow_id={flow_id} caller_id={caller_id} context_id={context_id}")
+    edges: List[Tuple[int, int]] = dag.get("edges", [])
+    roots: List[int] = dag.get("roots", [])
+    leaves: List[int] = dag.get("leaves", [])
+    levels: List[List[int]] = dag.get("levels", [])
+    nodes: Dict[str, Any] = dag.get("nodes", {})
+
+    print("Edges:")
+    for a, b in edges:
+        print(f"  {a} -> {b}")
+
+    print(f"Roots: {roots}")
+    print(f"Leaves: {leaves}")
+    print("Levels:")
+    for i, lvl in enumerate(levels):
+        print(f"  L{i}: {lvl}")
+
+    # Show nodes and their dependencies (from JobSummary)
+    print("Nodes:")
+    for k, v in nodes.items():
+        depends = v.get("depends", [])
+        prerequisites = v.get("prerequisites", [])
+        stype = v.get("script_type")
+        print(f"  Job {k}: depends={depends} prerequisites={prerequisites} script_type={stype}")
+
+def assert_edges(edges: List[Tuple[int, int]], required: List[Tuple[int, int]]):
+    edge_set = {(int(a), int(b)) for a, b in edges}
+    missing = [e for e in required if e not in edge_set]
+    if missing:
+        raise AssertionError(f"Missing expected edges in DAG: {missing}; got={sorted(edge_set)}")
+
+def main():
+    url = os.getenv("COORDINATOR_URL", "http://127.0.0.1:9652")
+    client = JsonRpcClient(url)
+
+    # Deterministic demo IDs; change if collisions happen
+    actor_id = 1001
+    context_id = 1  # Redis DB indices are 0-15; keep <= 15
+    job_a = 3001
+    job_b = 3002
+    job_c = 3003
+    job_d = 3004
+    job_e = 3005
+    job_f = 3006
+    job_g = 3007
+    job_h = 3008
+    job_i = 3009
+    flow_id = 4001
+
+    print_header("actor.create")
+    actor = client.call("actor.create", {
+        "actor": {
+            "id": actor_id,
+            "pubkey": "demo-pubkey",
+            "address": ["127.0.0.1"]
+        }
+    })
+    pretty_print(actor)
+
+    print_header("actor.load")
+    actor_loaded = client.call("actor.load", {"id": actor_id})
+    pretty_print(actor_loaded)
+
+    print_header("context.create")
+    context = client.call("context.create", {
+        "context": {
+            "id": context_id,
+            "admins": [actor_id],
+            "readers": [actor_id],
+            "executors": [actor_id]
+        }
+    })
+    pretty_print(context)
+
+    print_header("job.create - A (root)")
+    jobA = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_a,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('A')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": []
+        }
+    })
+    pretty_print(jobA)
+
+    print_header("job.create - B (root)")
+    jobB = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_b,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('B')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": []
+        }
+    })
+    pretty_print(jobB)
+
+    print_header("job.create - C (depends on A and B)")
+    jobC = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_c,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('C')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_a, job_b]
+        }
+    })
+    pretty_print(jobC)
+
+    print_header("job.create - D (depends on A)")
+    jobD = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_d,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('D')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_a]
+        }
+    })
+    pretty_print(jobD)
+
+    print_header("job.create - E (depends on B)")
+    jobE = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_e,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('E')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_b]
+        }
+    })
+    pretty_print(jobE)
+
+    print_header("job.create - F (depends on C and D)")
+    jobF = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_f,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('F')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_c, job_d]
+        }
+    })
+    pretty_print(jobF)
+
+    print_header("job.create - G (depends on C and E)")
+    jobG = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_g,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('G')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_c, job_e]
+        }
+    })
+    pretty_print(jobG)
+
+    print_header("job.create - H (leaf; depends on F and G)")
+    jobH = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_h,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('H')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_f, job_g]
+        }
+    })
+    pretty_print(jobH)
+
+    print_header("job.create - I (leaf; depends on F and G)")
+    jobI = client.call("job.create", {
+        "context_id": context_id,
+        "job": {
+            "id": job_i,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": "print('I')",
+            "script_type": "Python",
+            "timeout": 30,
+            "retries": 0,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": [job_f, job_g]
+        }
+    })
+    pretty_print(jobI)
+
+    print_header("flow.create")
+    flow = client.call("flow.create", {
+        "context_id": context_id,
+        "flow": {
+            "id": flow_id,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "jobs": [job_a, job_b, job_c, job_d, job_e, job_f, job_g, job_h, job_i],
+            "env_vars": {}
+        }
+    })
+    pretty_print(flow)
+
+    print_header("flow.dag")
+    dag = client.call("flow.dag", {"context_id": context_id, "id": flow_id})
+    summarize_dag(dag)
+
+    # Validate roots and leaves
+    got_roots = list(map(int, dag.get("roots", [])))
+    if got_roots != sorted([job_a, job_b]):
+        print("WARNING: Unexpected roots:", got_roots, file=sys.stderr)
+
+    got_leaves = {int(x) for x in dag.get("leaves", [])}
+    expected_leaves = {job_h, job_i}
+    if got_leaves != expected_leaves:
+        print("WARNING: Unexpected leaves:", got_leaves, "expected:", expected_leaves, file=sys.stderr)
+
+    # Check edges reflect the expanded DAG
+    expected_edges = [
+        (job_a, job_c), (job_b, job_c),
+        (job_a, job_d), (job_b, job_e),
+        (job_c, job_f), (job_d, job_f),
+        (job_c, job_g), (job_e, job_g),
+        (job_f, job_h), (job_g, job_h),
+        (job_f, job_i), (job_g, job_i),
+    ]
+    try:
+        assert_edges(dag.get("edges", []), expected_edges)
+        print("DAG edges contain expected dependencies:", expected_edges)
+    except AssertionError as e:
+        print("WARNING:", e, file=sys.stderr)
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as e:
+        print_header("Error")
+        print(str(e))
+        sys.exit(1)

scripts/supervisor_flow_demo.py

@@ -0,0 +1,349 @@
+#!/usr/bin/env python3
+"""
+Supervisor flow demo for HeroCoordinator.
+
+This script:
+- Creates an actor
+- Creates a context granting the actor admin/reader/executor privileges
+- Registers a Runner in the context targeting a Supervisor reachable via Mycelium (by public key or IP)
+- Creates simple Python jobs (text jobs) with a small dependency chain
+- Creates a flow referencing those jobs
+- Starts the flow and polls until it finishes (or errors)
+
+Transport: JSON-RPC over HTTP to the Coordinator (default COORDINATOR_URL=http://127.0.0.1:9652).
+
+Example usage:
+  COORDINATOR_URL=http://127.0.0.1:9652 python3 scripts/supervisor_flow_demo.py --dst-ip 2001:db8::1
+  COORDINATOR_URL=http://127.0.0.1:9652 python3 scripts/supervisor_flow_demo.py --dst-pk bb39b4a3a4efd70f3e05e37887677e02efbda14681d0acd3882bc0f754792c32
+
+Notes:
+- Exactly one of --dst-ip or --dst-pk must be provided.
+- Runner.topic defaults to "supervisor.rpc" (see main.rs).
+- The router auto-discovers contexts and will deliver job.run messages to the supervisor.
+"""
+
+import argparse
+import json
+import os
+import sys
+import time
+from typing import Any, Dict, List, Optional, Tuple
+from urllib import request, error
+
+JSONRPC_VERSION = "2.0"
+
+
+def env_url() -> str:
+    return os.getenv("COORDINATOR_URL", "http://127.0.0.1:9652").rstrip("/")
+
+
+class JsonRpcClient:
+    def __init__(self, url: str):
+        self.url = url
+        self._id = 0
+
+    def call(self, method: str, params: Dict[str, Any]) -> Any:
+        self._id += 1
+        payload = {
+            "jsonrpc": JSONRPC_VERSION,
+            "id": self._id,
+            "method": method,
+            "params": params,
+        }
+        data = json.dumps(payload).encode("utf-8")
+        req = request.Request(self.url, data=data, headers={"Content-Type": "application/json"})
+        try:
+            with request.urlopen(req) as resp:
+                body = resp.read()
+        except error.HTTPError as e:
+            try:
+                details = e.read().decode("utf-8", "ignore")
+            except Exception:
+                details = ""
+            raise RuntimeError(f"HTTP error {e.code}: {details}") from e
+        except error.URLError as e:
+            raise RuntimeError(f"URL error: {e.reason}") from e
+
+        try:
+            obj = json.loads(body.decode("utf-8"))
+        except Exception as e:
+            raise RuntimeError(f"Invalid JSON response: {body!r}") from e
+
+        if isinstance(obj, list):
+            raise RuntimeError("Batch responses are not supported")
+
+        if obj.get("error"):
+            raise RuntimeError(f"RPC error: {json.dumps(obj['error'])}")
+
+        return obj.get("result")
+
+
+def print_header(title: str):
+    print("\n" + "=" * 80)
+    print(title)
+    print("=" * 80)
+
+
+def pretty(obj: Any):
+    print(json.dumps(obj, indent=2, sort_keys=True))
+
+
+def try_create_or_load(client: JsonRpcClient, create_method: str, create_params: Dict[str, Any],
+                       load_method: str, load_params: Dict[str, Any]) -> Any:
+    """Attempt a create; if it fails due to existence, try load."""
+    try:
+        return client.call(create_method, create_params)
+    except RuntimeError as e:
+        msg = str(e)
+        # Server maps AlreadyExists to StorageError, we don't have a structured error code here.
+        if "Already exists" in msg or "Storage Error" in msg or "Invalid params" in msg:
+            # Fall back to load
+            return client.call(load_method, load_params)
+        raise
+
+
+def parse_args() -> argparse.Namespace:
+    p = argparse.ArgumentParser(description="Create actor/context/runner/jobs/flow; start and wait until completion.")
+    group = p.add_mutually_exclusive_group(required=True)
+    group.add_argument("--dst-ip", help="Supervisor Mycelium IP address (IPv4 or IPv6)")
+    group.add_argument("--dst-pk", help="Supervisor public key (64-hex)")
+
+    p.add_argument("--context-id", type=int, default=2, help="Context id (Redis DB index; 0-15). Default: 2")
+    p.add_argument("--actor-id", type=int, default=11001, help="Actor id. Default: 11001")
+    p.add_argument("--runner-id", type=int, default=12001, help="Runner id. Default: 12001")
+    p.add_argument("--flow-id", type=int, default=13001, help="Flow id. Default: 13001")
+    p.add_argument("--base-job-id", type=int, default=20000, help="Base job id for first job; subsequent jobs increment. Default: 20000")
+    p.add_argument("--jobs", type=int, default=3, help="Number of jobs to create (>=1). Forms a simple chain. Default: 3")
+    p.add_argument("--timeout-secs", type=int, default=60, help="Per-job timeout seconds. Default: 60")
+    p.add_argument("--retries", type=int, default=0, help="Per-job retries (0-255). Default: 0")
+    p.add_argument(
+        "--script-type",
+        choices=["Python", "V", "Osis", "Sal"],
+        default="Python",
+        help="ScriptType for jobs/runner. Default: Python"
+    )
+    p.add_argument("--topic", default="supervisor.rpc", help="Supervisor topic. Default: supervisor.rpc")
+    p.add_argument("--poll-interval", type=float, default=2.0, help="Flow poll interval seconds. Default: 2.0")
+    p.add_argument("--poll-timeout", type=int, default=600, help="Max seconds to wait for flow completion. Default: 600")
+    return p.parse_args()
+
+
+def main():
+    args = parse_args()
+    if args.jobs < 1:
+        print("ERROR: --jobs must be >= 1", file=sys.stderr)
+        sys.exit(2)
+
+    url = env_url()
+    client = JsonRpcClient(url)
+
+    actor_id = int(args.actor_id)
+    context_id = int(args.context_id)
+    runner_id = int(args.runner_id)
+    flow_id = int(args.flow_id)
+    base_job_id = int(args.base_job_id)
+    script_type = args.script_type
+    timeout = int(args.timeout_secs)
+    retries = int(args.retries)
+    topic = args.topic
+
+    # 1) Actor
+    print_header("actor.create (or load)")
+    actor = try_create_or_load(
+        client,
+        "actor.create",
+        {
+            "actor": {
+                "id": actor_id,
+                "pubkey": "demo-pubkey",
+                "address": ["127.0.0.1"],
+            }
+        },
+        "actor.load",
+        {"id": actor_id},
+    )
+    pretty(actor)
+
+    # 2) Context
+    print_header("context.create (or load)")
+    context = try_create_or_load(
+        client,
+        "context.create",
+        {
+            "context": {
+                "id": context_id,
+                "admins": [actor_id],
+                "readers": [actor_id],
+                "executors": [actor_id],
+            }
+        },
+        "context.load",
+        {"id": context_id},
+    )
+    pretty(context)
+
+    # 3) Runner in this context
+    # Router picks pubkey if non-empty, else IP address.
+    # However, RunnerCreate requires both fields; we fill both and control routing via pubkey empty/non-empty.
+    runner_pubkey = args.dst_pk if args.dst_pk else ""
+    runner_address = args.dst_ip if args.dst_ip else "127.0.0.1"
+
+    print_header("runner.create (or load)")
+    # runner.load requires both context_id and id
+    try:
+        runner = client.call("runner.create", {
+            "context_id": context_id,
+            "runner": {
+                "id": runner_id,
+                "pubkey": runner_pubkey,
+                "address": runner_address,
+                "topic": topic,
+                "script_type": script_type,
+                "local": False
+            }
+        })
+    except RuntimeError as e:
+        msg = str(e)
+        if "Already exists" in msg or "Storage Error" in msg or "Invalid params" in msg:
+            runner = client.call("runner.load", {"context_id": context_id, "id": runner_id})
+        else:
+            raise
+    pretty(runner)
+
+    # 4) Jobs
+    # Build a simple chain: J0 (root), J1 depends on J0, J2 depends on J1, ... up to N-1
+    job_ids: List[int] = []
+    for i in range(args.jobs):
+        jid = base_job_id + i
+        depends = [] if i == 0 else [base_job_id + (i - 1)]
+        job_payload = {
+            "id": jid,
+            "caller_id": actor_id,
+            "context_id": context_id,
+            "script": f"print('Job {i} running')",
+            "script_type": script_type,
+            "timeout": timeout,
+            "retries": retries,
+            "env_vars": {},
+            "prerequisites": [],
+            "depends": depends,
+        }
+        print_header(f"job.create - {jid} {'(root)' if not depends else f'(depends on {depends})'}")
+        try:
+            job = client.call("job.create", {
+                "context_id": context_id,
+                "job": job_payload
+            })
+        except RuntimeError as e:
+            msg = str(e)
+            if "Already exists" in msg or "Storage Error" in msg or "Invalid params" in msg:
+                job = client.call("job.load", {
+                    "context_id": context_id,
+                    "caller_id": actor_id,
+                    "id": jid
+                })
+            else:
+                raise
+        pretty(job)
+        job_ids.append(jid)
+
+    # 5) Flow
+    print_header("flow.create (or load)")
+    try:
+        flow = client.call("flow.create", {
+            "context_id": context_id,
+            "flow": {
+                "id": flow_id,
+                "caller_id": actor_id,
+                "context_id": context_id,
+                "jobs": job_ids,
+                "env_vars": {}
+            }
+        })
+    except RuntimeError as e:
+        msg = str(e)
+        if "Already exists" in msg or "Storage Error" in msg or "Invalid params" in msg:
+            flow = client.call("flow.load", {"context_id": context_id, "id": flow_id})
+        else:
+            raise
+    pretty(flow)
+
+    # Optional: show DAG
+    try:
+        print_header("flow.dag")
+        dag = client.call("flow.dag", {"context_id": context_id, "id": flow_id})
+        pretty(dag)
+    except Exception as e:
+        print(f"WARN: flow.dag failed: {e}", file=sys.stderr)
+
+    # 6) Start flow (idempotent; returns bool whether scheduler started)
+    print_header("flow.start")
+    started = client.call("flow.start", {"context_id": context_id, "id": flow_id})
+    print(f"flow.start -> {started}")
+
+    # 7) Poll until Finished or Error (or timeout)
+    print_header("Polling flow.load until completion")
+    t0 = time.time()
+    status = None
+    last_status_print = 0.0
+    poll_count = 0
+    while True:
+        poll_count += 1
+        flow = client.call("flow.load", {"context_id": context_id, "id": flow_id})
+        status = flow.get("status")
+        now = time.time()
+        if now - last_status_print >= max(1.0, float(args.poll_interval)):
+            print(f"[{int(now - t0)}s] flow.status = {status}")
+            last_status_print = now
+
+        # Every 5th poll, print the current flow DAG
+        if (poll_count % 5) == 0:
+            try:
+                print_header("flow.dag (periodic)")
+                dag = client.call("flow.dag", {"context_id": context_id, "id": flow_id})
+                pretty(dag)
+            except Exception as e:
+                print(f"WARN: periodic flow.dag failed: {e}", file=sys.stderr)
+
+        if status in ("Finished", "Error"):
+            break
+        if (now - t0) > args.poll_timeout:
+            print(f"ERROR: Flow did not complete within {args.poll_timeout}s (status={status})", file=sys.stderr)
+            break
+
+        time.sleep(float(args.poll_interval))
+
+    # 8) Final summary: job statuses
+    print_header("Final job statuses")
+    for jid in job_ids:
+        try:
+            j = client.call("job.load", {
+                "context_id": context_id,
+                "caller_id": actor_id,
+                "id": jid
+            })
+            print(f"Job {jid}: status={j.get('status')} result={j.get('result')}")
+        except Exception as e:
+            print(f"Job {jid}: load failed: {e}", file=sys.stderr)
+
+    # Exit code
+    if status == "Finished":
+        print_header("Result")
+        print("Flow finished successfully.")
+        sys.exit(0)
+    else:
+        print_header("Result")
+        print(f"Flow ended with status={status}")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        print("\nInterrupted.")
+        sys.exit(130)
+    except Exception as e:
+        print_header("Error")
+        print(str(e))
+        sys.exit(1)

specs/openrpc.json

@@ -20,7 +20,7 @@
   "methods": [
     {
       "name": "actor.create",
-      "summary": "Create/Upsert Actor in a context",
+      "summary": "Create/Upsert Actor",
       "params": [
         {
           "name": "params",
@@ -49,7 +49,7 @@
     },
     {
       "name": "actor.load",
-      "summary": "Load an Actor by id from a context",
+      "summary": "Load an Actor by id",
       "params": [
         {
           "name": "params",
@@ -438,6 +438,16 @@
           "Processed"
         ]
       },
+      "TransportStatus": {
+        "type": "string",
+        "enum": [
+          "Queued",
+          "Sent",
+          "Delivered",
+          "Read",
+          "Failed"
+        ]
+      },
       "MessageType": {
         "type": "string",
         "enum": [
@@ -779,6 +789,12 @@
           },
           "status": {
             "$ref": "#/components/schemas/MessageStatus"
+          },
+          "transport_id": {
+            "type": "string"
+          },
+          "transport_status": {
+            "$ref": "#/components/schemas/TransportStatus"
           }
         }
       },
@@ -1165,14 +1181,9 @@
       "ActorCreateParams": {
         "type": "object",
         "required": [
-          "context_id",
           "actor"
         ],
         "properties": {
-          "context_id": {
-            "type": "integer",
-            "format": "uint32"
-          },
           "actor": {
             "$ref": "#/components/schemas/ActorCreate"
           }
@@ -1181,14 +1192,9 @@
       "ActorLoadParams": {
         "type": "object",
         "required": [
-          "context_id",
           "id"
         ],
         "properties": {
-          "context_id": {
-            "type": "integer",
-            "format": "uint32"
-          },
           "id": {
             "type": "integer",
             "format": "uint32"

specs/specs.md

@@ -10,7 +10,7 @@
 | **Runner** | Public key, Mycelium address, topic name, type (`v\|python\|osis\|rust`), local flag, timestamps                                                                                                                                          | `runner:<id>` (hash)                      | The *worker* that actually executes **RunnerJob** scripts. It subscribes to a Mycelium topic (normally `runner<id>`). If `local == true` the runner also consumes jobs directly from a Redis queue that is named after the script‑type suffix (`v`, `python`, …).                                                                                                                                                                                                                                                                                                                                 |
 | **RunnerJob**| Script source, type (`osis\|sal\|v\|python`), env‑vars, prerequisites, dependencies, status, timestamps, result map                                                                                                                       | `job:<caller_id>:<id>` (hash)             | A single executable unit. It lives inside a **Context**, belongs to a **Runner**, and is queued according to its `script_type` (e.g. `queue:python`). Its status moves through the lifecycle `dispatched → waiting_for_prerequisites → started → finished|error`.                                                                                                                                                                                                                                                                                                                                 |
 
-> **Key idea:** All objects are persisted as *hashes* in a **Redis** database that is dedicated to a *Context*. The system is completely **decentralised** – each actor owns its own context and can spin up as many runners as needed. Communication between actors, runners and the rest of the system happens over **Mycelium**, a message‑bus that uses Redis lists as queues.
+> **Key idea:** All objects are persisted as *hashes*. Context‑scoped objects (**Context**, **Flow**, **Message**, **Runner**, **RunnerJob**) live in a **Redis** database dedicated to that context. **Actors are global** and are stored in Redis DB 0 under `actor:<id>`. The system is completely **decentralised** – each actor owns its own context and can spin up as many runners as needed. Communication between actors, runners and the rest of the system happens over **Mycelium**, a message‑bus that uses Redis lists as queues.
 
 ---
 

src/clients/mod.rs

@@ -0,0 +1,7 @@
+pub mod mycelium_client;
+pub mod supervisor_client;
+pub mod types;
+
+pub use mycelium_client::{MyceliumClient, MyceliumClientError};
+pub use supervisor_client::{SupervisorClient, SupervisorClientError};
+pub use types::Destination;

src/clients/mycelium_client.rs

@@ -0,0 +1,237 @@
+use std::sync::Arc;
+use std::sync::atomic::{AtomicU64, Ordering};
+
+use reqwest::Client as HttpClient;
+
+use serde_json::{Value, json};
+use thiserror::Error;
+
+use crate::clients::Destination;
+use crate::models::TransportStatus;
+
+/// Lightweight client for Mycelium JSON-RPC (send + query status)
+#[derive(Clone)]
+pub struct MyceliumClient {
+    base_url: String, // e.g. http://127.0.0.1:8990
+    http: HttpClient,
+    id_counter: Arc<AtomicU64>,
+}
+
+#[derive(Debug, Error)]
+pub enum MyceliumClientError {
+    #[error("HTTP error: {0}")]
+    Http(#[from] reqwest::Error),
+    #[error("JSON error: {0}")]
+    Json(#[from] serde_json::Error),
+    #[error("Transport timed out waiting for a reply (408)")]
+    TransportTimeout,
+    #[error("JSON-RPC error: {0}")]
+    RpcError(String),
+    #[error("Invalid response: {0}")]
+    InvalidResponse(String),
+}
+
+impl MyceliumClient {
+    pub fn new(base_url: impl Into<String>) -> Result<Self, MyceliumClientError> {
+        let url = base_url.into();
+        let http = HttpClient::builder().build()?;
+        Ok(Self {
+            base_url: url,
+            http,
+            id_counter: Arc::new(AtomicU64::new(1)),
+        })
+    }
+
+    fn next_id(&self) -> u64 {
+        self.id_counter.fetch_add(1, Ordering::Relaxed)
+    }
+
+    async fn jsonrpc(&self, method: &str, params: Value) -> Result<Value, MyceliumClientError> {
+        let req = json!({
+            "jsonrpc": "2.0",
+            "id": self.next_id(),
+            "method": method,
+            "params": [ params ]
+        });
+        let resp = self.http.post(&self.base_url).json(&req).send().await?;
+        let status = resp.status();
+        let body: Value = resp.json().await?;
+        if let Some(err) = body.get("error") {
+            let code = err.get("code").and_then(|v| v.as_i64()).unwrap_or(0);
+            let msg = err
+                .get("message")
+                .and_then(|v| v.as_str())
+                .unwrap_or("unknown error");
+            if code == 408 {
+                return Err(MyceliumClientError::TransportTimeout);
+            }
+            return Err(MyceliumClientError::RpcError(format!(
+                "code={code} msg={msg}"
+            )));
+        }
+        if !status.is_success() {
+            return Err(MyceliumClientError::RpcError(format!(
+                "HTTP {status}, body {body}"
+            )));
+        }
+        Ok(body)
+    }
+
+    /// Call messageStatus with an outbound message id (hex string)
+    pub async fn message_status(
+        &self,
+        id_hex: &str,
+    ) -> Result<TransportStatus, MyceliumClientError> {
+        let params = json!({ "id": id_hex });
+        let body = self.jsonrpc("messageStatus", params).await?;
+        let result = body.get("result").ok_or_else(|| {
+            MyceliumClientError::InvalidResponse(format!("missing result in response: {body}"))
+        })?;
+        // Accept both { status: "..."} and bare "..."
+        let status_str = if let Some(s) = result.get("status").and_then(|v| v.as_str()) {
+            s.to_string()
+        } else if let Some(s) = result.as_str() {
+            s.to_string()
+        } else {
+            return Err(MyceliumClientError::InvalidResponse(format!(
+                "unexpected result shape: {result}"
+            )));
+        };
+        Self::map_status(&status_str).ok_or_else(|| {
+            MyceliumClientError::InvalidResponse(format!("unknown status: {status_str}"))
+        })
+    }
+
+    fn map_status(s: &str) -> Option<TransportStatus> {
+        match s {
+            "queued" => Some(TransportStatus::Queued),
+            "sent" => Some(TransportStatus::Sent),
+            "delivered" => Some(TransportStatus::Delivered),
+            "read" => Some(TransportStatus::Read),
+            "failed" => Some(TransportStatus::Failed),
+            _ => None,
+        }
+    }
+
+    /// Build params object for pushMessage without performing any network call.
+    /// Exposed for serializer-only tests and reuse.
+    pub(crate) fn build_push_params(
+        dst: &Destination,
+        topic: &str,
+        payload_b64: &str,
+        reply_timeout: Option<u64>,
+    ) -> Value {
+        let dst_v = match dst {
+            Destination::Ip(ip) => json!({ "ip": ip.to_string() }),
+            Destination::Pk(pk) => json!({ "pk": pk }),
+        };
+        let mut message = json!({
+            "dst": dst_v,
+            "topic": topic,
+            "payload": payload_b64,
+        });
+        if let Some(rt) = reply_timeout {
+            message["reply_timeout"] = json!(rt);
+        }
+        message
+    }
+
+    /// pushMessage: send a message with dst/topic/payload. Optional reply_timeout for sync replies.
+    pub async fn push_message(
+        &self,
+        dst: &Destination,
+        topic: &str,
+        payload_b64: &str,
+        reply_timeout: Option<u64>,
+    ) -> Result<Value, MyceliumClientError> {
+        let params = Self::build_push_params(dst, topic, payload_b64, reply_timeout);
+        let body = self.jsonrpc("pushMessage", params).await?;
+        let result = body.get("result").ok_or_else(|| {
+            MyceliumClientError::InvalidResponse(format!("missing result in response: {body}"))
+        })?;
+        Ok(result.clone())
+    }
+
+    /// Helper to extract outbound message id from pushMessage result (InboundMessage or PushMessageResponseId)
+    pub fn extract_message_id_from_result(result: &Value) -> Option<String> {
+        result
+            .get("id")
+            .and_then(|v| v.as_str())
+            .map(|s| s.to_string())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::clients::Destination;
+
+    #[test]
+    fn build_push_params_shapes_ip_pk_and_timeout() {
+        // IP destination
+        let p1 = MyceliumClient::build_push_params(
+            &Destination::Ip("2001:db8::1".parse().unwrap()),
+            "supervisor.rpc",
+            "Zm9vYmFy", // "foobar"
+            Some(10),
+        );
+        let msg1 = p1.get("message").unwrap();
+        assert_eq!(
+            msg1.get("topic").unwrap().as_str().unwrap(),
+            "supervisor.rpc"
+        );
+        assert_eq!(msg1.get("payload").unwrap().as_str().unwrap(), "Zm9vYmFy");
+        assert_eq!(
+            msg1.get("dst")
+                .unwrap()
+                .get("ip")
+                .unwrap()
+                .as_str()
+                .unwrap(),
+            "2001:db8::1"
+        );
+        assert_eq!(p1.get("reply_timeout").unwrap().as_u64().unwrap(), 10);
+
+        // PK destination without timeout
+        let p2 = MyceliumClient::build_push_params(
+            &Destination::Pk(
+                "bb39b4a3a4efd70f3e05e37887677e02efbda14681d0acd3882bc0f754792c32".into(),
+            ),
+            "supervisor.rpc",
+            "YmF6", // "baz"
+            None,
+        );
+        let msg2 = p2.get("message").unwrap();
+        assert_eq!(
+            msg2.get("dst")
+                .unwrap()
+                .get("pk")
+                .unwrap()
+                .as_str()
+                .unwrap(),
+            "bb39b4a3a4efd70f3e05e37887677e02efbda14681d0acd3882bc0f754792c32"
+        );
+        assert!(p2.get("reply_timeout").is_none());
+    }
+
+    #[test]
+    fn extract_message_id_variants() {
+        // PushMessageResponseId
+        let r1 = json!({"id":"0123456789abcdef"});
+        assert_eq!(
+            MyceliumClient::extract_message_id_from_result(&r1).unwrap(),
+            "0123456789abcdef"
+        );
+
+        // InboundMessage-like
+        let r2 = json!({
+            "id":"fedcba9876543210",
+            "srcIp":"449:abcd:0123:defa::1",
+            "payload":"hpV+"
+        });
+        assert_eq!(
+            MyceliumClient::extract_message_id_from_result(&r2).unwrap(),
+            "fedcba9876543210"
+        );
+    }
+}

src/clients/supervisor_client.rs

@@ -0,0 +1,506 @@
+use std::sync::Arc;
+use std::sync::atomic::{AtomicU64, Ordering};
+
+use base64::Engine;
+use base64::engine::general_purpose::STANDARD as BASE64_STANDARD;
+use serde_json::{Value, json};
+use thiserror::Error;
+
+use crate::clients::{Destination, MyceliumClient, MyceliumClientError};
+
+#[derive(Clone)]
+pub struct SupervisorClient {
+    mycelium: Arc<MyceliumClient>, // Delegated Mycelium transport
+    destination: Destination,      // ip or pk
+    topic: String,                 // e.g. "supervisor.rpc"
+    secret: Option<String>,        // optional, required by several supervisor methods
+    id_counter: Arc<AtomicU64>,    // JSON-RPC id generator (for inner supervisor requests)
+}
+
+#[derive(Debug, Error)]
+pub enum SupervisorClientError {
+    #[error("HTTP error: {0}")]
+    Http(#[from] reqwest::Error),
+    #[error("JSON error: {0}")]
+    Json(#[from] serde_json::Error),
+    #[error("Transport timed out waiting for a reply (408)")]
+    TransportTimeout,
+    #[error("JSON-RPC error: {0}")]
+    RpcError(String),
+    #[error("Invalid response: {0}")]
+    InvalidResponse(String),
+    #[error("Missing secret for method requiring authentication")]
+    MissingSecret,
+}
+
+impl From<MyceliumClientError> for SupervisorClientError {
+    fn from(e: MyceliumClientError) -> Self {
+        match e {
+            MyceliumClientError::TransportTimeout => SupervisorClientError::TransportTimeout,
+            MyceliumClientError::RpcError(m) => SupervisorClientError::RpcError(m),
+            MyceliumClientError::InvalidResponse(m) => SupervisorClientError::InvalidResponse(m),
+            MyceliumClientError::Http(err) => SupervisorClientError::Http(err),
+            MyceliumClientError::Json(err) => SupervisorClientError::Json(err),
+        }
+    }
+}
+
+impl SupervisorClient {
+    /// Preferred constructor: provide a shared Mycelium client.
+    pub fn new_with_client(
+        mycelium: Arc<MyceliumClient>,
+        destination: Destination,
+        topic: impl Into<String>,
+        secret: Option<String>,
+    ) -> Self {
+        Self {
+            mycelium,
+            destination,
+            topic: topic.into(),
+            secret,
+            id_counter: Arc::new(AtomicU64::new(1)),
+        }
+    }
+
+    /// Backward-compatible constructor that builds a Mycelium client from base_url.
+    /// base_url defaults to Mycelium spec "http://127.0.0.1:8990" if empty.
+    pub fn new(
+        base_url: impl Into<String>,
+        destination: Destination,
+        topic: impl Into<String>,
+        secret: Option<String>,
+    ) -> Result<Self, SupervisorClientError> {
+        let mut url = base_url.into();
+        if url.is_empty() {
+            url = "http://127.0.0.1:8990".to_string();
+        }
+        let mycelium = Arc::new(MyceliumClient::new(url)?);
+        Ok(Self::new_with_client(mycelium, destination, topic, secret))
+    }
+
+    fn next_id(&self) -> u64 {
+        self.id_counter.fetch_add(1, Ordering::Relaxed)
+    }
+
+    /// Internal helper used by tests to inspect dst JSON shape.
+    fn build_dst(&self) -> Value {
+        match &self.destination {
+            Destination::Ip(ip) => json!({ "ip": ip.to_string() }),
+            Destination::Pk(pk) => json!({ "pk": pk }),
+        }
+    }
+
+    fn build_supervisor_payload(&self, method: &str, params: Value) -> Value {
+        json!({
+            "jsonrpc": "2.0",
+            "id": self.next_id(),
+            "method": method,
+            "params": params,
+        })
+    }
+
+    fn encode_payload(payload: &Value) -> Result<String, SupervisorClientError> {
+        let s = serde_json::to_string(payload)?;
+        Ok(BASE64_STANDARD.encode(s.as_bytes()))
+    }
+
+    fn encode_topic(topic: &[u8]) -> String {
+        BASE64_STANDARD.encode(topic)
+    }
+
+    fn extract_message_id_from_result(result: &Value) -> Option<String> {
+        // Two possibilities per Mycelium spec oneOf:
+        // - PushMessageResponseId: { "id": "0123456789abcdef" }
+        // - InboundMessage: object containing "id" plus srcIp, ...; we still return id.
+        result
+            .get("id")
+            .and_then(|v| v.as_str())
+            .map(|s| s.to_string())
+    }
+
+    /// Generic call: build supervisor JSON-RPC message, send via Mycelium pushMessage, return outbound message id (hex).
+    pub async fn call(&self, method: &str, params: Value) -> Result<String, SupervisorClientError> {
+        let inner = self.build_supervisor_payload(method, params);
+        let payload_b64 = Self::encode_payload(&inner)?;
+        let result = self
+            .mycelium
+            .push_message(
+                &self.destination,
+                &Self::encode_topic(self.topic.as_bytes()),
+                &payload_b64,
+                None,
+            )
+            .await?;
+
+        if let Some(id) = MyceliumClient::extract_message_id_from_result(&result) {
+            return Ok(id);
+        }
+        // Some servers might return the oneOf wrapped, handle len==1 array defensively (not in spec but resilient)
+        if let Some(arr) = result.as_array()
+            && arr.len() == 1
+            && let Some(id) = MyceliumClient::extract_message_id_from_result(&arr[0])
+        {
+            return Ok(id);
+        }
+        Err(SupervisorClientError::InvalidResponse(format!(
+            "result did not contain message id: {result}"
+        )))
+    }
+
+    /// Synchronous variant: wait for a JSON-RPC reply via Mycelium reply_timeout, and return the inner JSON-RPC "result".
+    /// If the supervisor returns an error object, map to RpcError.
+    pub async fn call_sync(
+        &self,
+        method: &str,
+        params: Value,
+        reply_timeout_secs: u64,
+    ) -> Result<Value, SupervisorClientError> {
+        let inner = self.build_supervisor_payload(method, params);
+        let payload_b64 = Self::encode_payload(&inner)?;
+
+        let result = self
+            .mycelium
+            .push_message(
+                &self.destination,
+                &self.topic,
+                &payload_b64,
+                Some(reply_timeout_secs),
+            )
+            .await?;
+
+        // Expect an InboundMessage-like with a base64 payload containing the supervisor JSON-RPC response
+        let payload_field = if let Some(p) = result.get("payload").and_then(|v| v.as_str()) {
+            p.to_string()
+        } else if let Some(arr) = result.as_array() {
+            // Defensive: handle single-element array shape
+            if let Some(one) = arr.get(0) {
+                one.get("payload")
+                    .and_then(|v| v.as_str())
+                    .map(|s| s.to_string())
+                    .ok_or_else(|| {
+                        SupervisorClientError::InvalidResponse(format!(
+                            "missing payload in result: {result}"
+                        ))
+                    })?
+            } else {
+                return Err(SupervisorClientError::TransportTimeout);
+            }
+        } else {
+            // No payload => no reply received within timeout (Mycelium would have returned just an id)
+            return Err(SupervisorClientError::TransportTimeout);
+        };
+
+        let raw = BASE64_STANDARD
+            .decode(payload_field.as_bytes())
+            .map_err(|e| {
+                SupervisorClientError::InvalidResponse(format!("invalid base64 payload: {e}"))
+            })?;
+        let rpc_resp: Value = serde_json::from_slice(&raw)?;
+
+        if let Some(err) = rpc_resp.get("error") {
+            return Err(SupervisorClientError::RpcError(err.to_string()));
+        }
+        let res = rpc_resp.get("result").ok_or_else(|| {
+            SupervisorClientError::InvalidResponse(format!(
+                "missing result in supervisor reply: {rpc_resp}"
+            ))
+        })?;
+        Ok(res.clone())
+    }
+
+    fn need_secret(&self) -> Result<&str, SupervisorClientError> {
+        self.secret
+            .as_deref()
+            .ok_or(SupervisorClientError::MissingSecret)
+    }
+
+    // -----------------------------
+    // Typed wrappers for Supervisor API
+    // Asynchronous-only: returns outbound message id
+    // -----------------------------
+
+    // Runners
+    pub async fn list_runners(&self) -> Result<String, SupervisorClientError> {
+        self.call("list_runners", json!([])).await
+    }
+
+    pub async fn register_runner(
+        &self,
+        name: impl Into<String>,
+        queue: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "name": name.into(),
+            "queue": queue.into()
+        }]);
+        self.call("register_runner", params).await
+    }
+
+    pub async fn remove_runner(
+        &self,
+        actor_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("remove_runner", json!([actor_id.into()])).await
+    }
+
+    pub async fn start_runner(
+        &self,
+        actor_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("start_runner", json!([actor_id.into()])).await
+    }
+
+    pub async fn stop_runner(
+        &self,
+        actor_id: impl Into<String>,
+        force: bool,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("stop_runner", json!([actor_id.into(), force]))
+            .await
+    }
+
+    pub async fn get_runner_status(
+        &self,
+        actor_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("get_runner_status", json!([actor_id.into()]))
+            .await
+    }
+
+    pub async fn get_all_runner_status(&self) -> Result<String, SupervisorClientError> {
+        self.call("get_all_runner_status", json!([])).await
+    }
+
+    pub async fn start_all(&self) -> Result<String, SupervisorClientError> {
+        self.call("start_all", json!([])).await
+    }
+
+    pub async fn stop_all(&self, force: bool) -> Result<String, SupervisorClientError> {
+        self.call("stop_all", json!([force])).await
+    }
+
+    pub async fn get_all_status(&self) -> Result<String, SupervisorClientError> {
+        self.call("get_all_status", json!([])).await
+    }
+
+    // Jobs
+    pub async fn jobs_create(&self, job: Value) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "job": job
+        }]);
+        self.call("jobs.create", params).await
+    }
+
+    pub async fn jobs_list(&self) -> Result<String, SupervisorClientError> {
+        self.call("jobs.list", json!([])).await
+    }
+
+    pub async fn job_run(&self, job: Value) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "job": job
+        }]);
+        self.call("job.run", params).await
+    }
+
+    pub async fn job_start(
+        &self,
+        job_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "job_id": job_id.into()
+        }]);
+        self.call("job.start", params).await
+    }
+
+    pub async fn job_status(
+        &self,
+        job_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("job.status", json!([job_id.into()])).await
+    }
+
+    /// Synchronous job.status: waits for the supervisor to reply and returns the status string.
+    /// The supervisor result may be an object with { status: "..." } or a bare string.
+    pub async fn job_status_sync(
+        &self,
+        job_id: impl Into<String>,
+        reply_timeout_secs: u64,
+    ) -> Result<String, SupervisorClientError> {
+        let res = self
+            .call_sync("job.status", json!([job_id.into()]), reply_timeout_secs)
+            .await?;
+        let status = if let Some(s) = res.get("status").and_then(|v| v.as_str()) {
+            s.to_string()
+        } else if let Some(s) = res.as_str() {
+            s.to_string()
+        } else {
+            return Err(SupervisorClientError::InvalidResponse(format!(
+                "unexpected job.status result shape: {res}"
+            )));
+        };
+        Ok(status)
+    }
+
+    pub async fn job_result(
+        &self,
+        job_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        self.call("job.result", json!([job_id.into()])).await
+    }
+
+    /// Synchronous job.result: waits for the supervisor to reply and returns a map
+    /// containing exactly one of:
+    /// - {"success": "..."} on success
+    /// - {"error": "..."} on error reported by the runner
+    /// Some servers may return a bare string; we treat that as {"success": "<string>"}.
+    pub async fn job_result_sync(
+        &self,
+        job_id: impl Into<String>,
+        reply_timeout_secs: u64,
+    ) -> Result<std::collections::HashMap<String, String>, SupervisorClientError> {
+        let res = self
+            .call_sync("job.result", json!([job_id.into()]), reply_timeout_secs)
+            .await?;
+
+        use std::collections::HashMap;
+        let mut out: HashMap<String, String> = HashMap::new();
+
+        if let Some(obj) = res.as_object() {
+            if let Some(s) = obj.get("success").and_then(|v| v.as_str()) {
+                out.insert("success".to_string(), s.to_string());
+                return Ok(out);
+            }
+            if let Some(s) = obj.get("error").and_then(|v| v.as_str()) {
+                out.insert("error".to_string(), s.to_string());
+                return Ok(out);
+            }
+            return Err(SupervisorClientError::InvalidResponse(format!(
+                "unexpected job.result result shape: {res}"
+            )));
+        } else if let Some(s) = res.as_str() {
+            out.insert("success".to_string(), s.to_string());
+            return Ok(out);
+        }
+
+        Err(SupervisorClientError::InvalidResponse(format!(
+            "unexpected job.result result shape: {res}"
+        )))
+    }
+
+    pub async fn job_stop(
+        &self,
+        job_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "job_id": job_id.into()
+        }]);
+        self.call("job.stop", params).await
+    }
+
+    pub async fn job_delete(
+        &self,
+        job_id: impl Into<String>,
+    ) -> Result<String, SupervisorClientError> {
+        let secret = self.need_secret()?;
+        let params = json!([{
+            "secret": secret,
+            "job_id": job_id.into()
+        }]);
+        self.call("job.delete", params).await
+    }
+
+    // Discovery
+    pub async fn rpc_discover(&self) -> Result<String, SupervisorClientError> {
+        self.call("rpc.discover", json!([])).await
+    }
+}
+
+// -----------------------------
+// Tests (serialization-only)
+// -----------------------------
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::net::IpAddr;
+
+    fn mk_client() -> SupervisorClient {
+        // Uses the legacy constructor but will not issue real network calls in these tests.
+        SupervisorClient::new(
+            "http://127.0.0.1:8990",
+            Destination::Pk(
+                "bb39b4a3a4efd70f3e05e37887677e02efbda14681d0acd3882bc0f754792c32".to_string(),
+            ),
+            "supervisor.rpc",
+            Some("secret".to_string()),
+        )
+        .unwrap()
+    }
+
+    #[test]
+    fn builds_dst_ip_and_pk() {
+        let c_ip = SupervisorClient::new(
+            "http://127.0.0.1:8990",
+            Destination::Ip("2001:db8::1".parse().unwrap()),
+            "supervisor.rpc",
+            None,
+        )
+        .unwrap();
+        let v_ip = c_ip.build_dst();
+        assert_eq!(v_ip.get("ip").unwrap().as_str().unwrap(), "2001:db8::1");
+
+        let c_pk = mk_client();
+        let v_pk = c_pk.build_dst();
+        assert_eq!(
+            v_pk.get("pk").unwrap().as_str().unwrap(),
+            "bb39b4a3a4efd70f3e05e37887677e02efbda14681d0acd3882bc0f754792c32"
+        );
+    }
+
+    #[test]
+    fn encodes_supervisor_payload_b64() {
+        let c = mk_client();
+        let payload = c.build_supervisor_payload("list_runners", json!([]));
+        let b64 = SupervisorClient::encode_payload(&payload).unwrap();
+
+        // decode and compare round-trip JSON
+        let raw = base64::engine::general_purpose::STANDARD
+            .decode(b64.as_bytes())
+            .unwrap();
+        let decoded: Value = serde_json::from_slice(&raw).unwrap();
+        assert_eq!(
+            decoded.get("method").unwrap().as_str().unwrap(),
+            "list_runners"
+        );
+        assert_eq!(decoded.get("jsonrpc").unwrap().as_str().unwrap(), "2.0");
+    }
+
+    #[test]
+    fn extract_message_id_works_for_both_variants() {
+        // PushMessageResponseId
+        let r1 = json!({"id":"0123456789abcdef"});
+        assert_eq!(
+            SupervisorClient::extract_message_id_from_result(&r1).unwrap(),
+            "0123456789abcdef"
+        );
+        // InboundMessage-like
+        let r2 = json!({
+            "id":"fedcba9876543210",
+            "srcIp":"449:abcd:0123:defa::1",
+            "payload":"hpV+"
+        });
+        assert_eq!(
+            SupervisorClient::extract_message_id_from_result(&r2).unwrap(),
+            "fedcba9876543210"
+        );
+    }
+}

src/clients/types.rs

@@ -0,0 +1,9 @@
+use std::net::IpAddr;
+
+/// Destination for Mycelium messages (shared by clients)
+#[derive(Clone, Debug)]
+pub enum Destination {
+    Ip(IpAddr),
+    /// 64-hex public key of the receiver node
+    Pk(String),
+}

src/lib.rs

@@ -1,6 +1,8 @@
-pub mod models;
-pub mod storage;
-pub mod service;
-mod time;
+pub mod clients;
 pub mod dag;
+pub mod models;
+pub mod router;
 pub mod rpc;
+pub mod service;
+pub mod storage;
+mod time;

src/main.rs

@@ -2,6 +2,8 @@ use clap::Parser;
 use std::net::{IpAddr, SocketAddr};
 use std::sync::Arc;
 
+use tracing::{error, info};
+use tracing_subscriber::EnvFilter;
 #[derive(Debug, Clone, Parser)]
 #[command(
     name = "herocoordinator",
@@ -23,8 +25,8 @@ struct Cli {
         long = "mycelium-port",
         short = 'p',
         env = "MYCELIUM_PORT",
-        default_value_t = 9651u16,
-        help = "Port for Mycelium JSON-RPC (default: 9651)"
+        default_value_t = 8990u16,
+        help = "Port for Mycelium JSON-RPC (default: 8990)"
     )]
     mycelium_port: u16,
 
@@ -73,6 +75,14 @@ struct Cli {
 #[tokio::main]
 async fn main() {
     let cli = Cli::parse();
+    // Initialize tracing subscriber (pretty formatter; controlled by RUST_LOG)
+    let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info"));
+    tracing_subscriber::fmt()
+        .with_env_filter(filter)
+        .pretty()
+        .with_target(true)
+        .with_level(true)
+        .init();
 
     let http_addr = SocketAddr::new(cli.api_http_ip, cli.api_http_port);
     let ws_addr = SocketAddr::new(cli.api_ws_ip, cli.api_ws_port);
@@ -84,18 +94,30 @@ async fn main() {
 
     // Initialize Service
     let service = herocoordinator::service::AppService::new(redis);
+    let service_for_router = service.clone();
 
     // Shared application state
     let state = Arc::new(herocoordinator::rpc::AppState::new(service));
 
+    // Start router workers (auto-discovered contexts)
+    {
+        let base_url = format!("http://{}:{}", cli.mycelium_ip, cli.mycelium_port);
+        let cfg = herocoordinator::router::RouterConfig {
+            context_ids: Vec::new(), // ignored by start_router_auto
+            concurrency: 32,
+            base_url,
+            topic: "supervisor.rpc".to_string(),
+            transport_poll_interval_secs: 2,
+            transport_poll_timeout_secs: 300,
+        };
+        let _auto_handle = herocoordinator::router::start_router_auto(service_for_router, cfg);
+    }
+
     // Build RPC modules for both servers
     let http_module = herocoordinator::rpc::build_module(state.clone());
     let ws_module = herocoordinator::rpc::build_module(state.clone());
 
-    println!(
-        "Starting JSON-RPC servers: HTTP http://{} | WS ws://{} | redis_addr={}",
-        http_addr, ws_addr, cli.redis_addr
-    );
+    info!(%http_addr, %ws_addr, redis_addr=%cli.redis_addr, "Starting JSON-RPC servers");
 
     // Start servers
     let _http_handle = herocoordinator::rpc::start_http(http_addr, http_module)
@@ -107,7 +129,7 @@ async fn main() {
 
     // Wait for Ctrl+C to terminate
     if let Err(e) = tokio::signal::ctrl_c().await {
-        eprintln!("Failed to listen for shutdown signal: {e}");
+        error!(error=%e, "Failed to listen for shutdown signal");
     }
-    println!("Shutdown signal received, exiting.");
+    info!("Shutdown signal received, exiting.");
 }

src/models.rs

@@ -10,6 +10,6 @@ pub use actor::Actor;
 pub use context::Context;
 pub use flow::{Flow, FlowStatus};
 pub use job::{Job, JobStatus};
-pub use message::{Message, MessageFormatType, MessageStatus, MessageType};
+pub use message::{Message, MessageFormatType, MessageStatus, MessageType, TransportStatus};
 pub use runner::Runner;
 pub use script_type::ScriptType;

src/models/message.rs

@@ -22,6 +22,12 @@ pub struct Message {
     pub timeout_ack: u32,
     /// Seconds for the receiver to send us a reply
     pub timeout_result: u32,
+
+    /// Outbound transport id returned by Mycelium on push
+    pub transport_id: Option<String>,
+    /// Latest transport status as reported by Mycelium
+    pub transport_status: Option<TransportStatus>,
+
     pub job: Vec<Job>,
     pub logs: Vec<Log>,
     pub created_at: Timestamp,
@@ -44,6 +50,15 @@ pub enum MessageStatus {
     Processed,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub enum TransportStatus {
+    Queued,
+    Sent,
+    Delivered,
+    Read,
+    Failed,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum MessageFormatType {
     Html,

src/models/runner.rs

@@ -2,6 +2,7 @@ use std::net::IpAddr;
 
 use serde::{Deserialize, Serialize};
 
+use crate::models::ScriptType;
 use crate::time::Timestamp;
 
 #[derive(Serialize, Deserialize, Clone)]
@@ -13,6 +14,8 @@ pub struct Runner {
     pub address: IpAddr,
     /// Needs to be set by the runner, usually `runner<runnerid`
     pub topic: String,
+    /// The script type this runner can execute; used for routing
+    pub script_type: ScriptType,
     /// If this is true, the runner also listens on a local redis queue
     pub local: bool,
     pub created_at: Timestamp,

src/models/script_type.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone, Deserialize, Serialize)]
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq)]
 pub enum ScriptType {
     Osis,
     Sal,

src/router.rs

@@ -0,0 +1,475 @@
+use std::{collections::HashSet, sync::Arc};
+
+use serde_json::{Value, json};
+use tokio::sync::Semaphore;
+
+use crate::{
+    clients::{Destination, MyceliumClient, SupervisorClient},
+    models::{Job, JobStatus, Message, MessageStatus, ScriptType, TransportStatus},
+    service::AppService,
+};
+use tracing::{error, info};
+
+#[derive(Clone, Debug)]
+pub struct RouterConfig {
+    pub context_ids: Vec<u32>,
+    pub concurrency: usize,
+    pub base_url: String, // e.g. http://127.0.0.1:8990
+    pub topic: String,    // e.g. "supervisor.rpc"
+    // Transport status polling configuration
+    pub transport_poll_interval_secs: u64, // e.g. 2
+    pub transport_poll_timeout_secs: u64,  // e.g. 300 (5 minutes)
+}
+
+/// Start background router loops, one per context.
+/// Each loop:
+/// - BRPOP msg_out with 1s timeout
+/// - Loads the Message by key, selects a Runner by script_type
+/// - Sends supervisor JSON-RPC via Mycelium
+/// - On success: Message.status = Acknowledged
+/// - On error: Message.status = Error and append a log
+pub fn start_router(service: AppService, cfg: RouterConfig) -> Vec<tokio::task::JoinHandle<()>> {
+    let mut handles = Vec::new();
+    for ctx_id in cfg.context_ids.clone() {
+        let service_cloned = service.clone();
+        let cfg_cloned = cfg.clone();
+        let handle = tokio::spawn(async move {
+            let sem = Arc::new(Semaphore::new(cfg_cloned.concurrency));
+
+            // Create a shared Mycelium client for this context loop (retry until available)
+            let mycelium = loop {
+                match MyceliumClient::new(cfg_cloned.base_url.clone()) {
+                    Ok(c) => break Arc::new(c),
+                    Err(e) => {
+                        error!(context_id=ctx_id, error=%e, "MyceliumClient init error");
+                        tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                    }
+                }
+            };
+
+            loop {
+                // Pop next message key (blocking with timeout)
+                match service_cloned.brpop_msg_out(ctx_id, 1).await {
+                    Ok(Some(key)) => {
+                        let permit = {
+                            // acquire a concurrency permit (non-fair is fine)
+                            let sem = sem.clone();
+                            // if semaphore is exhausted, await until a slot becomes available
+                            match sem.acquire_owned().await {
+                                Ok(p) => p,
+                                Err(_) => {
+                                    // Semaphore closed; exit loop
+                                    break;
+                                }
+                            }
+                        };
+                        let service_task = service_cloned.clone();
+                        let cfg_task = cfg_cloned.clone();
+                        tokio::spawn({
+                            let mycelium = mycelium.clone();
+                            async move {
+                                // Ensure permit is dropped at end of task
+                                let _permit = permit;
+                                if let Err(e) =
+                                    deliver_one(&service_task, &cfg_task, ctx_id, &key, mycelium)
+                                        .await
+                                {
+                                    error!(context_id=ctx_id, key=%key, error=%e, "Delivery error");
+                                }
+                            }
+                        });
+                    }
+                    Ok(None) => {
+                        // timeout: just tick
+                        continue;
+                    }
+                    Err(e) => {
+                        error!(context_id=ctx_id, error=%e, "BRPOP error");
+                        // small backoff to avoid busy-loop on persistent errors
+                        tokio::time::sleep(std::time::Duration::from_millis(200)).await;
+                    }
+                }
+            }
+        });
+        handles.push(handle);
+    }
+    handles
+}
+
+async fn deliver_one(
+    service: &AppService,
+    cfg: &RouterConfig,
+    context_id: u32,
+    msg_key: &str,
+    mycelium: Arc<MyceliumClient>,
+) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    // Parse "message:{caller_id}:{id}"
+    let (caller_id, id) = parse_message_key(msg_key)
+        .ok_or_else(|| format!("invalid message key format: {}", msg_key))?;
+
+    // Load message
+    let msg: Message = service.load_message(context_id, caller_id, id).await?;
+    // Embedded job id (if any)
+    let job_id_opt: Option<u32> = msg.job.first().map(|j| j.id);
+
+    // Determine routing script_type
+    let desired: ScriptType = determine_script_type(&msg);
+
+    // Discover runners and select a matching one
+    let runners = service.scan_runners(context_id).await?;
+    let Some(runner) = runners.into_iter().find(|r| r.script_type == desired) else {
+        let log = format!(
+            "No runner with script_type {:?} available in context {} for message {}",
+            desired, context_id, msg_key
+        );
+        let _ = service
+            .append_message_logs(context_id, caller_id, id, vec![log.clone()])
+            .await;
+        let _ = service
+            .update_message_status(context_id, caller_id, id, MessageStatus::Error)
+            .await;
+        return Err(log.into());
+    };
+
+    // Build SupervisorClient
+    let dest = if !runner.pubkey.trim().is_empty() {
+        Destination::Pk(runner.pubkey.clone())
+    } else {
+        Destination::Ip(runner.address)
+    };
+    // Keep clones for poller usage
+    let dest_for_poller = dest.clone();
+    let topic_for_poller = cfg.topic.clone();
+    let client = SupervisorClient::new_with_client(
+        mycelium.clone(),
+        dest.clone(),
+        cfg.topic.clone(),
+        None, // secret
+    );
+
+    // Build supervisor method and params from Message
+    let method = msg.message.clone();
+    let params = build_params(&msg)?;
+
+    // Send
+    let out_id = client.call(&method, params).await?;
+
+    // Store transport id and initial Sent status
+    let _ = service
+        .update_message_transport(
+            context_id,
+            caller_id,
+            id,
+            Some(out_id.clone()),
+            Some(TransportStatus::Sent),
+        )
+        .await;
+
+    // Mark as acknowledged on success
+    service
+        .update_message_status(context_id, caller_id, id, MessageStatus::Acknowledged)
+        .await?;
+
+    // Spawn transport-status poller
+    {
+        let service_poll = service.clone();
+        let poll_interval = std::time::Duration::from_secs(cfg.transport_poll_interval_secs);
+        let poll_timeout = std::time::Duration::from_secs(cfg.transport_poll_timeout_secs);
+        let out_id_cloned = out_id.clone();
+        let mycelium = mycelium.clone();
+        // Determine reply timeout for supervisor job.result: prefer message.timeout_result, fallback to router config timeout
+        let job_result_reply_timeout: u64 = if msg.timeout_result > 0 {
+            msg.timeout_result as u64
+        } else {
+            cfg.transport_poll_timeout_secs
+        };
+
+        tokio::spawn(async move {
+            let start = std::time::Instant::now();
+            let client = mycelium;
+
+            // Supervisor call context captured for sync status checks
+            let sup_dest = dest_for_poller;
+            let sup_topic = topic_for_poller;
+            let job_id_opt = job_id_opt;
+
+            let mut last_status: Option<TransportStatus> = Some(TransportStatus::Sent);
+
+            loop {
+                if start.elapsed() >= poll_timeout {
+                    let _ = service_poll
+                        .append_message_logs(
+                            context_id,
+                            caller_id,
+                            id,
+                            vec!["Transport-status polling timed out".to_string()],
+                        )
+                        .await;
+                    // leave last known status; do not override
+                    break;
+                }
+
+                match client.message_status(&out_id_cloned).await {
+                    Ok(s) => {
+                        if last_status.as_ref() != Some(&s) {
+                            let _ = service_poll
+                                .update_message_transport(
+                                    context_id,
+                                    caller_id,
+                                    id,
+                                    None,
+                                    Some(s.clone()),
+                                )
+                                .await;
+                            last_status = Some(s.clone());
+                        }
+
+                        // Stop on terminal states
+                        if matches!(s, TransportStatus::Delivered | TransportStatus::Read) {
+                            // On Read, fetch supervisor job.status and update local job/message if terminal
+                            if matches!(s, TransportStatus::Read)
+                                && let Some(job_id) = job_id_opt
+                            {
+                                let sup = SupervisorClient::new_with_client(
+                                    client.clone(),
+                                    sup_dest.clone(),
+                                    sup_topic.clone(),
+                                    None,
+                                );
+                                match sup.job_status_sync(job_id.to_string(), 10).await {
+                                    Ok(remote_status) => {
+                                        if let Some((mapped, terminal)) =
+                                            map_supervisor_job_status(&remote_status)
+                                        {
+                                            if terminal {
+                                                let _ = service_poll
+                                                    .update_job_status_unchecked(
+                                                        context_id,
+                                                        caller_id,
+                                                        job_id,
+                                                        mapped.clone(),
+                                                    )
+                                                    .await;
+
+                                                // After terminal status, fetch supervisor job.result and store into Job.result
+                                                let sup = SupervisorClient::new_with_client(
+                                                    client.clone(),
+                                                    sup_dest.clone(),
+                                                    sup_topic.clone(),
+                                                    None,
+                                                );
+                                                match sup
+                                                    .job_result_sync(
+                                                        job_id.to_string(),
+                                                        job_result_reply_timeout,
+                                                    )
+                                                    .await
+                                                {
+                                                    Ok(result_map) => {
+                                                        // Persist the result into the Job.result map (merge)
+                                                        let _ = service_poll
+                                                            .update_job_result_merge_unchecked(
+                                                                context_id,
+                                                                caller_id,
+                                                                job_id,
+                                                                result_map.clone(),
+                                                            )
+                                                            .await;
+                                                        // Log which key was stored (success or error)
+                                                        let key = result_map
+                                                            .keys()
+                                                            .next()
+                                                            .cloned()
+                                                            .unwrap_or_else(|| {
+                                                                "unknown".to_string()
+                                                            });
+                                                        let _ = service_poll
+                                                                .append_message_logs(
+                                                                    context_id,
+                                                                    caller_id,
+                                                                    id,
+                                                                    vec![format!(
+                                                                        "Stored supervisor job.result for job {} ({})",
+                                                                        job_id, key
+                                                                    )],
+                                                                )
+                                                                .await;
+                                                    }
+                                                    Err(e) => {
+                                                        let _ = service_poll
+                                                                .append_message_logs(
+                                                                    context_id,
+                                                                    caller_id,
+                                                                    id,
+                                                                    vec![format!(
+                                                                        "job.result fetch error for job {}: {}",
+                                                                        job_id, e
+                                                                    )],
+                                                                )
+                                                                .await;
+                                                    }
+                                                }
+
+                                                // Mark message as processed
+                                                let _ = service_poll
+                                                    .update_message_status(
+                                                        context_id,
+                                                        caller_id,
+                                                        id,
+                                                        MessageStatus::Processed,
+                                                    )
+                                                    .await;
+                                                let _ = service_poll
+                                                        .append_message_logs(
+                                                            context_id,
+                                                            caller_id,
+                                                            id,
+                                                            vec![format!(
+                                                                "Supervisor job.status for job {} -> {} (mapped to {:?})",
+                                                                job_id, remote_status, mapped
+                                                            )],
+                                                        )
+                                                        .await;
+                                            }
+                                        } else {
+                                            let _ = service_poll
+                                                .append_message_logs(
+                                                    context_id,
+                                                    caller_id,
+                                                    id,
+                                                    vec![format!(
+                                                        "Unknown supervisor status '{}' for job {}",
+                                                        remote_status, job_id
+                                                    )],
+                                                )
+                                                .await;
+                                        }
+                                    }
+                                    Err(e) => {
+                                        let _ = service_poll
+                                            .append_message_logs(
+                                                context_id,
+                                                caller_id,
+                                                id,
+                                                vec![format!("job.status sync error: {}", e)],
+                                            )
+                                            .await;
+                                    }
+                                }
+                            }
+                            break;
+                        }
+                        if matches!(s, TransportStatus::Failed) {
+                            let _ = service_poll
+                                .append_message_logs(
+                                    context_id,
+                                    caller_id,
+                                    id,
+                                    vec![format!(
+                                        "Transport failed for outbound id {out_id_cloned}"
+                                    )],
+                                )
+                                .await;
+                            break;
+                        }
+                    }
+                    Err(e) => {
+                        // Log and continue polling
+                        let _ = service_poll
+                            .append_message_logs(
+                                context_id,
+                                caller_id,
+                                id,
+                                vec![format!("messageStatus query error: {e}")],
+                            )
+                            .await;
+                    }
+                }
+
+                tokio::time::sleep(poll_interval).await;
+            }
+        });
+    }
+
+    Ok(())
+}
+
+fn determine_script_type(msg: &Message) -> ScriptType {
+    // Prefer embedded job's script_type if available, else fallback to message.message_type
+    match msg.job.first() {
+        Some(j) => j.script_type.clone(),
+        None => msg.message_type.clone(),
+    }
+}
+
+fn build_params(msg: &Message) -> Result<Value, Box<dyn std::error::Error + Send + Sync>> {
+    // Minimal mapping:
+    // - "job.run" with exactly one embedded job: [{ "job": <job> }]
+    // - otherwise: []
+    if msg.message == "job.run"
+        && let Some(j) = msg.job.first()
+    {
+        let jv = job_to_json(j)?;
+        return Ok(json!([ { "job": jv } ]));
+    }
+
+    Ok(json!([]))
+}
+
+fn job_to_json(job: &Job) -> Result<Value, Box<dyn std::error::Error + Send + Sync>> {
+    Ok(serde_json::to_value(job)?)
+}
+
+fn parse_message_key(s: &str) -> Option<(u32, u32)> {
+    // Expect "message:{caller_id}:{id}"
+    let mut it = s.split(':');
+    match (it.next(), it.next(), it.next(), it.next()) {
+        (Some("message"), Some(caller), Some(id), None) => {
+            let caller_id = caller.parse::<u32>().ok()?;
+            let msg_id = id.parse::<u32>().ok()?;
+            Some((caller_id, msg_id))
+        }
+        _ => None,
+    }
+}
+
+/// Map supervisor job.status -> (local JobStatus, terminal)
+fn map_supervisor_job_status(s: &str) -> Option<(JobStatus, bool)> {
+    match s {
+        "created" | "queued" => Some((JobStatus::Dispatched, false)),
+        "running" => Some((JobStatus::Started, false)),
+        "completed" => Some((JobStatus::Finished, true)),
+        "failed" | "timeout" => Some((JobStatus::Error, true)),
+        _ => None,
+    }
+}
+
+/// Auto-discover contexts periodically and ensure a router loop exists for each.
+/// Returns a JoinHandle of the discovery task (router loops are detached).
+pub fn start_router_auto(service: AppService, cfg: RouterConfig) -> tokio::task::JoinHandle<()> {
+    tokio::spawn(async move {
+        let mut active: HashSet<u32> = HashSet::new();
+        loop {
+            match service.list_context_ids().await {
+                Ok(ids) => {
+                    for ctx_id in ids {
+                        if !active.contains(&ctx_id) {
+                            // Spawn a loop for this new context
+                            let cfg_ctx = RouterConfig {
+                                context_ids: vec![ctx_id],
+                                ..cfg.clone()
+                            };
+                            let _ = start_router(service.clone(), cfg_ctx);
+                            active.insert(ctx_id);
+                            info!(context_id = ctx_id, "Started loop for context");
+                        }
+                    }
+                }
+                Err(e) => {
+                    error!(error=%e, "list_context_ids error");
+                }
+            }
+            tokio::time::sleep(std::time::Duration::from_secs(5)).await;
+        }
+    })
+}

src/rpc.rs

@@ -22,6 +22,9 @@ use crate::{
     time::current_timestamp,
 };
 
+/// The OpenRPC specification for the HeroCoordinator JSON-RPC API
+const OPENRPC_SPEC: &str = include_str!("../specs/openrpc.json");
+
 pub struct AppState {
     pub service: AppService,
 }
@@ -144,6 +147,8 @@ pub struct RunnerCreate {
     pub pubkey: String,
     pub address: IpAddr,
     pub topic: String,
+    /// The script type this runner executes (used for routing)
+    pub script_type: ScriptType,
     pub local: bool,
 }
 impl RunnerCreate {
@@ -155,6 +160,7 @@ impl RunnerCreate {
             pubkey,
             address,
             topic,
+            script_type,
             local,
         } = self;
 
@@ -163,6 +169,7 @@ impl RunnerCreate {
             pubkey,
             address,
             topic,
+            script_type,
             local,
             created_at: ts,
             updated_at: ts,
@@ -295,6 +302,8 @@ impl MessageCreate {
             timeout,
             timeout_ack,
             timeout_result,
+            transport_id: None,
+            transport_status: None,
             job: job.into_iter().map(JobCreate::into_domain).collect(),
             logs: Vec::new(),
             created_at: ts,
@@ -306,12 +315,10 @@ impl MessageCreate {
 
 #[derive(Debug, Deserialize)]
 pub struct ActorCreateParams {
-    pub context_id: u32,
     pub actor: ActorCreate,
 }
 #[derive(Debug, Deserialize)]
 pub struct ActorLoadParams {
-    pub context_id: u32,
     pub id: u32,
 }
 
@@ -388,7 +395,7 @@ pub fn build_module(state: Arc<AppState>) -> RpcModule<()> {
                     let actor = p.actor.into_domain().map_err(invalid_params_err)?;
                     let actor = state
                         .service
-                        .create_actor(p.context_id, actor)
+                        .create_actor(actor)
                         .await
                         .map_err(storage_err)?;
                     Ok::<_, ErrorObjectOwned>(actor)
@@ -403,11 +410,7 @@ pub fn build_module(state: Arc<AppState>) -> RpcModule<()> {
                 let state = state.clone();
                 async move {
                     let p: ActorLoadParams = params.parse().map_err(invalid_params_err)?;
-                    let actor = state
-                        .service
-                        .load_actor(p.context_id, p.id)
-                        .await
-                        .map_err(storage_err)?;
+                    let actor = state.service.load_actor(p.id).await.map_err(storage_err)?;
                     Ok::<_, ErrorObjectOwned>(actor)
                 }
             })
@@ -541,6 +544,23 @@ pub fn build_module(state: Arc<AppState>) -> RpcModule<()> {
             })
             .expect("register flow.dag");
     }
+    {
+        let state = state.clone();
+        module
+            .register_async_method("flow.start", move |params, _caller, _ctx| {
+                let state = state.clone();
+                async move {
+                    let p: FlowLoadParams = params.parse().map_err(invalid_params_err)?;
+                    let started: bool = state
+                        .service
+                        .flow_start(p.context_id, p.id)
+                        .await
+                        .map_err(storage_err)?;
+                    Ok::<_, ErrorObjectOwned>(started)
+                }
+            })
+            .expect("register flow.start");
+    }
 
     // Job
     {
@@ -615,6 +635,15 @@ pub fn build_module(state: Arc<AppState>) -> RpcModule<()> {
             })
             .expect("register message.load");
     }
+    {
+        module
+            .register_async_method("rpc.discover", move |_params, _caller, _ctx| async move {
+                let spec = serde_json::from_str::<serde_json::Value>(OPENRPC_SPEC)
+                    .expect("Failed to parse OpenRPC spec");
+                Ok::<_, ErrorObjectOwned>(spec)
+            })
+            .expect("register rpc.discover");
+    }
 
     module
 }

src/service.rs

@@ -1,12 +1,16 @@
-use crate::dag::{DagResult, FlowDag, build_flow_dag};
+use crate::dag::{DagError, DagResult, FlowDag, build_flow_dag};
 use crate::models::{
-    Actor, Context, Flow, FlowStatus, Job, JobStatus, Message, MessageStatus, Runner,
+    Actor, Context, Flow, FlowStatus, Job, JobStatus, Message, MessageFormatType, MessageStatus,
+    Runner, TransportStatus,
 };
 use crate::storage::RedisDriver;
 
 use serde::Serialize;
 use serde_json::Value;
-use std::collections::HashMap;
+use std::collections::{HashMap, HashSet};
+use std::sync::Arc;
+use tokio::sync::Mutex;
+use tokio::time::{Duration, sleep};
 
 pub type BoxError = Box<dyn std::error::Error + Send + Sync>;
 
@@ -112,10 +116,10 @@ fn contains_key_not_found(e: &BoxError) -> bool {
 fn has_duplicate_u32s(list: &Vec<Value>) -> bool {
     let mut seen = std::collections::HashSet::new();
     for it in list {
-        if let Some(x) = it.as_u64()
-            && !seen.insert(x)
-        {
-            return true;
+        if let Some(x) = it.as_u64() {
+            if !seen.insert(x) {
+                return true;
+            }
         }
     }
     false
@@ -153,7 +157,7 @@ fn validate_context(ctx: &Context) -> Result<(), BoxError> {
     Ok(())
 }
 
-fn validate_actor(_context_id: u32, actor: &Actor) -> Result<(), BoxError> {
+fn validate_actor(actor: &Actor) -> Result<(), BoxError> {
     let v = as_json(actor)?;
     let id = json_get_u32(&v, "id")?;
     if id == 0 {
@@ -305,13 +309,18 @@ fn validate_message(context_id: u32, msg: &Message) -> Result<(), BoxError> {
 // Service API
 // -----------------------------
 
+#[derive(Clone)]
 pub struct AppService {
-    redis: RedisDriver,
+    redis: Arc<RedisDriver>,
+    schedulers: Arc<Mutex<HashSet<(u32, u32)>>>,
 }
 
 impl AppService {
     pub fn new(redis: RedisDriver) -> Self {
-        Self { redis }
+        Self {
+            redis: Arc::new(redis),
+            schedulers: Arc::new(Mutex::new(HashSet::new())),
+        }
     }
 
     // -----------------------------
@@ -335,17 +344,17 @@ impl AppService {
     // -----------------------------
     // Actor
     // -----------------------------
-    pub async fn create_actor(&self, context_id: u32, actor: Actor) -> Result<Actor, BoxError> {
-        validate_actor(context_id, &actor)?;
+    pub async fn create_actor(&self, actor: Actor) -> Result<Actor, BoxError> {
+        validate_actor(&actor)?;
         let v = as_json(&actor)?;
         let id = json_get_u32(&v, "id")?;
-        self.ensure_actor_not_exists(context_id, id).await?;
-        self.redis.save_actor(context_id, &actor).await?;
+        self.ensure_actor_not_exists_global(id).await?;
+        self.redis.save_actor_global(&actor).await?;
         Ok(actor)
     }
 
-    pub async fn load_actor(&self, context_id: u32, id: u32) -> Result<Actor, BoxError> {
-        let actor = self.redis.load_actor(context_id, id).await?;
+    pub async fn load_actor(&self, id: u32) -> Result<Actor, BoxError> {
+        let actor = self.redis.load_actor_global(id).await?;
         Ok(actor)
     }
 
@@ -395,6 +404,220 @@ impl AppService {
         build_flow_dag(&self.redis, context_id, flow_id).await
     }
 
+    /// Start a background scheduler for a flow.
+    /// - Ticks every 1 second.
+    /// - Sets Flow status to Started immediately.
+    /// - Dispatches jobs whose dependencies are Finished: creates a Message and LPUSHes its key into msg_out,
+    ///   and marks the job status to Dispatched.
+    /// - When all jobs are Finished sets Flow to Finished; if any job is Error sets Flow to Error.
+    /// Returns:
+    ///   - Ok(true) if a scheduler was started
+    ///   - Ok(false) if a scheduler was already running for this (context_id, flow_id)
+    pub async fn flow_start(&self, context_id: u32, flow_id: u32) -> Result<bool, BoxError> {
+        // Ensure flow exists (and load caller_id)
+        let flow = self.redis.load_flow(context_id, flow_id).await?;
+        let caller_id = flow.caller_id();
+
+        // Try to register this flow in the active scheduler set
+        {
+            let mut guard = self.schedulers.lock().await;
+            if !guard.insert((context_id, flow_id)) {
+                // Already running
+                return Ok(false);
+            }
+        }
+
+        // Clone resources for background task
+        let redis = self.redis.clone();
+        let schedulers = self.schedulers.clone();
+
+        // Set Flow status to Started
+        let _ = redis
+            .update_flow_status(context_id, flow_id, FlowStatus::Started)
+            .await;
+
+        tokio::spawn(async move {
+            // Background loop
+            loop {
+                // Load current flow; stop if missing
+                let flow = match redis.load_flow(context_id, flow_id).await {
+                    Ok(f) => f,
+                    Err(_) => break,
+                };
+
+                // Track aggregate state
+                let mut all_finished = true;
+                let mut any_error = false;
+
+                // Iterate jobs declared in the flow
+                for jid in flow.jobs() {
+                    // Load job
+                    let job = match redis.load_job(context_id, caller_id, *jid).await {
+                        Ok(j) => j,
+                        Err(_) => {
+                            // If job is missing treat as error state for the flow and stop
+                            any_error = true;
+                            all_finished = false;
+                            break;
+                        }
+                    };
+
+                    match job.status() {
+                        JobStatus::Finished => {
+                            // done
+                        }
+                        JobStatus::Error => {
+                            any_error = true;
+                            all_finished = false;
+                        }
+                        JobStatus::Dispatched | JobStatus::Started => {
+                            all_finished = false;
+                        }
+                        JobStatus::WaitingForPrerequisites => {
+                            all_finished = false;
+
+                            // Check dependencies complete
+                            let mut deps_ok = true;
+                            for dep in job.depends() {
+                                match redis.load_job(context_id, caller_id, *dep).await {
+                                    Ok(dj) => {
+                                        if dj.status() != JobStatus::Finished {
+                                            deps_ok = false;
+                                            break;
+                                        }
+                                    }
+                                    Err(_) => {
+                                        deps_ok = false;
+                                        break;
+                                    }
+                                }
+                            }
+
+                            if deps_ok {
+                                // Build Message embedding this job
+                                let ts = crate::time::current_timestamp();
+                                let msg_id: u32 = job.id(); // deterministic message id per job for now
+
+                                let message = Message {
+                                    id: msg_id,
+                                    caller_id: job.caller_id(),
+                                    context_id,
+                                    message: "job.run".to_string(),
+                                    message_type: job.script_type(),
+                                    message_format_type: MessageFormatType::Text,
+                                    timeout: job.timeout,
+                                    timeout_ack: 10,
+                                    timeout_result: job.timeout,
+                                    transport_id: None,
+                                    transport_status: None,
+                                    job: vec![job.clone()],
+                                    logs: Vec::new(),
+                                    created_at: ts,
+                                    updated_at: ts,
+                                    status: MessageStatus::Dispatched,
+                                };
+
+                                // Persist the message and enqueue it
+                                if redis.save_message(context_id, &message).await.is_ok() {
+                                    let _ = redis
+                                        .enqueue_msg_out(context_id, job.caller_id(), msg_id)
+                                        .await;
+                                    // Mark job as Dispatched
+                                    let _ = redis
+                                        .update_job_status(
+                                            context_id,
+                                            job.caller_id(),
+                                            job.id(),
+                                            JobStatus::Dispatched,
+                                        )
+                                        .await;
+                                }
+                            }
+                        }
+                    }
+                }
+
+                if any_error {
+                    let _ = redis
+                        .update_flow_status(context_id, flow_id, FlowStatus::Error)
+                        .await;
+                    break;
+                }
+                if all_finished {
+                    let _ = redis
+                        .update_flow_status(context_id, flow_id, FlowStatus::Finished)
+                        .await;
+                    break;
+                }
+
+                sleep(Duration::from_secs(1)).await;
+            }
+
+            // Remove from active schedulers set
+            let mut guard = schedulers.lock().await;
+            guard.remove(&(context_id, flow_id));
+        });
+
+        Ok(true)
+    }
+
+    /// Execute a flow: compute DAG, create Message entries for ready jobs, and enqueue their keys to msg_out.
+    /// Returns the list of enqueued message keys ("message:{caller_id}:{id}") in deterministic order (by job id).
+    pub async fn flow_execute(&self, context_id: u32, flow_id: u32) -> DagResult<Vec<String>> {
+        let dag = build_flow_dag(&self.redis, context_id, flow_id).await?;
+        let mut ready = dag.ready_jobs()?;
+        ready.sort_unstable();
+
+        let mut queued: Vec<String> = Vec::with_capacity(ready.len());
+        for jid in ready {
+            // Load the concrete Job
+            let job = self
+                .redis
+                .load_job(context_id, dag.caller_id, jid)
+                .await
+                .map_err(DagError::from)?;
+
+            // Build a Message that embeds this job
+            let ts = crate::time::current_timestamp();
+            let msg_id: u32 = job.id(); // deterministic; adjust strategy later if needed
+
+            let message = Message {
+                id: msg_id,
+                caller_id: job.caller_id(),
+                context_id,
+                message: "job.run".to_string(),
+                message_type: job.script_type(), // uses ScriptType (matches model)
+                message_format_type: MessageFormatType::Text,
+                timeout: job.timeout,
+                timeout_ack: 10,
+                timeout_result: job.timeout,
+                transport_id: None,
+                transport_status: None,
+                job: vec![job.clone()],
+                logs: Vec::new(),
+                created_at: ts,
+                updated_at: ts,
+                status: MessageStatus::Dispatched,
+            };
+
+            // Persist the Message and enqueue its key to the outbound queue
+            let _ = self
+                .create_message(context_id, message)
+                .await
+                .map_err(DagError::from)?;
+
+            self.redis
+                .enqueue_msg_out(context_id, job.caller_id(), msg_id)
+                .await
+                .map_err(DagError::from)?;
+
+            let key = format!("message:{}:{}", job.caller_id(), msg_id);
+            queued.push(key);
+        }
+
+        Ok(queued)
+    }
+
     // -----------------------------
     // Job
     // -----------------------------
@@ -471,6 +694,48 @@ impl AppService {
 
         Ok(())
     }
+    /// Bypass-permission variant to update a job status with transition validation.
+    /// This skips the executor permission check but enforces the same state transition rules.
+    pub async fn update_job_status_unchecked(
+        &self,
+        context_id: u32,
+        caller_id: u32,
+        id: u32,
+        new_status: JobStatus,
+    ) -> Result<(), BoxError> {
+        let job = self.redis.load_job(context_id, caller_id, id).await?;
+        let current = job.status();
+
+        if new_status == current {
+            // Idempotent: don't touch storage if no change
+            return Ok(());
+        }
+
+        let allowed = match current {
+            JobStatus::Dispatched => matches!(
+                new_status,
+                JobStatus::WaitingForPrerequisites | JobStatus::Started | JobStatus::Error
+            ),
+            JobStatus::WaitingForPrerequisites => {
+                matches!(new_status, JobStatus::Started | JobStatus::Error)
+            }
+            JobStatus::Started => matches!(new_status, JobStatus::Finished | JobStatus::Error),
+            JobStatus::Finished | JobStatus::Error => false,
+        };
+
+        if !allowed {
+            return Err(Box::new(InvalidJobStatusTransition {
+                from: current,
+                to: new_status,
+            }));
+        }
+
+        self.redis
+            .update_job_status(context_id, caller_id, id, new_status)
+            .await?;
+
+        Ok(())
+    }
 
     // -----------------------------
     // Message
@@ -598,6 +863,21 @@ impl AppService {
             .await
     }
 
+    pub async fn update_message_transport(
+        &self,
+        context_id: u32,
+        caller_id: u32,
+        id: u32,
+        transport_id: Option<String>,
+        transport_status: Option<TransportStatus>,
+    ) -> Result<(), BoxError> {
+        // Ensure message exists (provides clearer error)
+        let _ = self.redis.load_message(context_id, caller_id, id).await?;
+        self.redis
+            .update_message_transport(context_id, caller_id, id, transport_id, transport_status)
+            .await
+    }
+
     pub async fn update_flow_env_vars_merge(
         &self,
         context_id: u32,
@@ -694,6 +974,22 @@ impl AppService {
             .await
     }
 
+    /// Bypass-permission variant to merge into a job's result field.
+    /// Intended for internal router/scheduler use where no actor identity is present.
+    pub async fn update_job_result_merge_unchecked(
+        &self,
+        context_id: u32,
+        caller_id: u32,
+        job_id: u32,
+        patch: HashMap<String, String>,
+    ) -> Result<(), BoxError> {
+        // Ensure job exists, then write directly
+        let _ = self.redis.load_job(context_id, caller_id, job_id).await?;
+        self.redis
+            .update_job_result_merge(context_id, caller_id, job_id, patch)
+            .await
+    }
+
     pub async fn append_message_logs(
         &self,
         context_id: u32,
@@ -727,8 +1023,8 @@ impl AppService {
         }
     }
 
-    async fn ensure_actor_not_exists(&self, db: u32, id: u32) -> Result<(), BoxError> {
-        match self.redis.load_actor(db, id).await {
+    async fn ensure_actor_not_exists_global(&self, id: u32) -> Result<(), BoxError> {
+        match self.redis.load_actor_global(id).await {
             Ok(_) => Err(Box::new(AlreadyExistsError {
                 key: format!("actor:{}", id),
             })),
@@ -848,3 +1144,28 @@ impl AppService {
         Ok(())
     }
 }
+
+/// Router/helper wrappers exposed on AppService so background tasks don't need direct Redis access.
+impl AppService {
+    /// Block-pop from the per-context msg_out queue with a timeout (seconds).
+    /// Returns Some(message_key) like "message:{caller_id}:{id}" or None on timeout.
+    pub async fn brpop_msg_out(
+        &self,
+        context_id: u32,
+        timeout_secs: usize,
+    ) -> Result<Option<String>, BoxError> {
+        self.redis.brpop_msg_out(context_id, timeout_secs).await
+    }
+
+    /// Scan all runner:* in the given context and return deserialized Runner entries.
+    pub async fn scan_runners(&self, context_id: u32) -> Result<Vec<Runner>, BoxError> {
+        self.redis.scan_runners(context_id).await
+    }
+}
+
+/// Auto-discovery helpers for contexts (wrappers over RedisDriver)
+impl AppService {
+    pub async fn list_context_ids(&self) -> Result<Vec<u32>, BoxError> {
+        self.redis.list_context_ids().await
+    }
+}

src/storage.rs

@@ -1,4 +1,3 @@
-
 pub mod redis;
 
 pub use redis::RedisDriver;

src/storage/redis.rs

@@ -8,7 +8,9 @@ use tokio::sync::Mutex;
 
 use crate::models::{
     Actor, Context, Flow, FlowStatus, Job, JobStatus, Message, MessageStatus, Runner,
+    TransportStatus,
 };
+use tracing::{error, warn};
 
 type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
 
@@ -52,8 +54,14 @@ impl RedisDriver {
 
         // Slow path: create a new manager and cache it
         let url = format!("{}/{}", self.base_addr.trim_end_matches('/'), db);
-        let client = redis::Client::open(url.as_str())?;
-        let cm = client.get_connection_manager().await?;
+        let client = redis::Client::open(url.as_str()).map_err(|e| {
+            error!(%url, db=%db, error=%e, "Redis client open failed");
+            e
+        })?;
+        let cm = client.get_connection_manager().await.map_err(|e| {
+            error!(%url, db=%db, error=%e, "Redis connection manager init failed");
+            e
+        })?;
 
         let mut guard = self.managers.lock().await;
         let entry = guard.entry(db).or_insert(cm);
@@ -104,21 +112,37 @@ impl RedisDriver {
 
     async fn hset_model<T: Serialize>(&self, db: u32, key: &str, model: &T) -> Result<()> {
         let mut cm = self.manager_for_db(db).await?;
-        let pairs = Self::struct_to_hset_pairs(model)?;
+        let pairs = Self::struct_to_hset_pairs(model).map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "Serialize model to HSET pairs failed");
+            e
+        })?;
         // Ensure no stale fields
-        let _: u64 = cm.del(key).await.unwrap_or(0);
+        let del_res: redis::RedisResult<u64> = cm.del(key).await;
+        if let Err(e) = del_res {
+            warn!(db=%db, key=%key, error=%e, "DEL before HSET failed");
+        }
         // Write all fields
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET multiple failed");
+            e
+        })?;
         Ok(())
     }
 
     async fn hget_model<T: DeserializeOwned>(&self, db: u32, key: &str) -> Result<T> {
         let mut cm = self.manager_for_db(db).await?;
-        let map: StdHashMap<String, String> = cm.hgetall(key).await?;
+        let map: StdHashMap<String, String> = cm.hgetall(key).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HGETALL failed");
+            e
+        })?;
         if map.is_empty() {
+            // NotFound is expected in some flows; don't log as error
             return Err(format!("Key not found: {}", key).into());
         }
-        Self::hmap_to_struct(map)
+        Self::hmap_to_struct(map).map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "Deserialize model from HGETALL failed");
+            e
+        })
     }
 
     // -----------------------------
@@ -163,7 +187,11 @@ impl RedisDriver {
             .and_then(|v| v.as_u64())
             .ok_or("Context.id missing or not a number")? as u32;
         let key = Self::context_key(id);
-        self.hset_model(id, &key, ctx).await
+        // Write the context hash in its own DB
+        self.hset_model(id, &key, ctx).await?;
+        // Register this context id in the global registry (DB 0)
+        let _ = self.register_context_id(id).await;
+        Ok(())
     }
 
     /// Load a Context from its own DB (db index = id)
@@ -192,6 +220,22 @@ impl RedisDriver {
         let key = Self::actor_key(id);
         self.hget_model(db, &key).await
     }
+    /// Save an Actor globally in DB 0 (Actor is context-independent)
+    pub async fn save_actor_global(&self, actor: &Actor) -> Result<()> {
+        let json = serde_json::to_value(actor)?;
+        let id = json
+            .get("id")
+            .and_then(|v| v.as_u64())
+            .ok_or("Actor.id missing or not a number")? as u32;
+        let key = Self::actor_key(id);
+        self.hset_model(0, &key, actor).await
+    }
+
+    /// Load an Actor globally from DB 0 by id
+    pub async fn load_actor_global(&self, id: u32) -> Result<Actor> {
+        let key = Self::actor_key(id);
+        self.hget_model(0, &key).await
+    }
 
     // -----------------------------
     // Runner
@@ -279,7 +323,10 @@ impl RedisDriver {
             ("status".to_string(), status_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_job_status failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -325,7 +372,10 @@ impl RedisDriver {
             ("status".to_string(), status_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_flow_status failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -350,7 +400,47 @@ impl RedisDriver {
             ("status".to_string(), status_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_message_status failed");
+            e
+        })?;
+        Ok(())
+    }
+
+    /// Message: update transport_id / transport_status (optionally) and bump updated_at
+    pub async fn update_message_transport(
+        &self,
+        db: u32,
+        caller_id: u32,
+        id: u32,
+        transport_id: Option<String>,
+        transport_status: Option<TransportStatus>,
+    ) -> Result<()> {
+        let mut cm = self.manager_for_db(db).await?;
+        let key = Self::message_key(caller_id, id);
+
+        let mut pairs: Vec<(String, String)> = Vec::new();
+
+        if let Some(tid) = transport_id {
+            pairs.push(("transport_id".to_string(), tid));
+        }
+
+        if let Some(ts_status) = transport_status {
+            let status_str = match serde_json::to_value(&ts_status)? {
+                Value::String(s) => s,
+                v => v.to_string(),
+            };
+            pairs.push(("transport_status".to_string(), status_str));
+        }
+
+        // Always bump updated_at
+        let ts = crate::time::current_timestamp();
+        pairs.push(("updated_at".to_string(), ts.to_string()));
+
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_message_transport failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -383,7 +473,10 @@ impl RedisDriver {
             ("env_vars".to_string(), env_vars_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_flow_env_vars_merge failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -416,7 +509,10 @@ impl RedisDriver {
             ("result".to_string(), result_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_flow_result_merge failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -450,7 +546,10 @@ impl RedisDriver {
             ("env_vars".to_string(), env_vars_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_job_env_vars_merge failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -484,7 +583,10 @@ impl RedisDriver {
             ("result".to_string(), result_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_job_result_merge failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -499,7 +601,10 @@ impl RedisDriver {
             ("jobs".to_string(), jobs_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET update_flow_jobs_set failed");
+            e
+        })?;
         Ok(())
     }
 
@@ -530,7 +635,120 @@ impl RedisDriver {
             ("logs".to_string(), logs_str),
             ("updated_at".to_string(), ts.to_string()),
         ];
-        let _: usize = cm.hset_multiple(key, &pairs).await?;
+        let _: () = cm.hset_multiple(&key, &pairs).await.map_err(|e| {
+            error!(db=%db, key=%key, error=%e, "HSET append_message_logs failed");
+            e
+        })?;
         Ok(())
     }
+
+    // -----------------------------
+    // Queues (lists)
+    // -----------------------------
+
+    /// Push a value onto a Redis list using LPUSH in the given DB.
+    pub async fn lpush_list(&self, db: u32, list: &str, value: &str) -> Result<()> {
+        let mut cm = self.manager_for_db(db).await?;
+        let _: i64 = cm.lpush(list, value).await.map_err(|e| {
+            error!(db=%db, list=%list, value=%value, error=%e, "LPUSH failed");
+            e
+        })?;
+        Ok(())
+    }
+
+    /// Enqueue a message key onto the outbound queue (msg_out).
+    /// The value is the canonical message key "message:{caller_id}:{id}".
+    pub async fn enqueue_msg_out(&self, db: u32, caller_id: u32, id: u32) -> Result<()> {
+        let key = Self::message_key(caller_id, id);
+        self.lpush_list(db, "msg_out", &key).await
+    }
+
+    /// Block-pop from msg_out with timeout (seconds). Returns the message key if present.
+    /// Uses BRPOP so that the queue behaves FIFO with LPUSH producer.
+    pub async fn brpop_msg_out(&self, db: u32, timeout_secs: usize) -> Result<Option<String>> {
+        let mut cm = self.manager_for_db(db).await?;
+        // BRPOP returns (list, element) on success
+        let res: Option<(String, String)> = redis::cmd("BRPOP")
+            .arg("msg_out")
+            .arg(timeout_secs)
+            .query_async(&mut cm)
+            .await
+            .map_err(|e| {
+                error!(db=%db, timeout_secs=%timeout_secs, error=%e, "BRPOP failed");
+                e
+            })?;
+        Ok(res.map(|(_, v)| v))
+    }
+
+    /// Scan all runner:* keys in this DB and return the deserialized Runner entries.
+    pub async fn scan_runners(&self, db: u32) -> Result<Vec<Runner>> {
+        let mut cm = self.manager_for_db(db).await?;
+        let mut out: Vec<Runner> = Vec::new();
+        let mut cursor: u64 = 0;
+        loop {
+            let (next, keys): (u64, Vec<String>) = redis::cmd("SCAN")
+                .arg(cursor)
+                .arg("MATCH")
+                .arg("runner:*")
+                .arg("COUNT")
+                .arg(100)
+                .query_async(&mut cm)
+                .await
+                .map_err(|e| {
+                    error!(db=%db, cursor=%cursor, error=%e, "SCAN failed");
+                    e
+                })?;
+            for k in keys {
+                if let Ok(r) = self.hget_model::<Runner>(db, &k).await {
+                    out.push(r);
+                }
+            }
+            if next == 0 {
+                break;
+            }
+            cursor = next;
+        }
+        Ok(out)
+    }
+
+    // -----------------------------
+    // Global registry (DB 0) for Context IDs
+    // -----------------------------
+
+    /// Register a context id in the global set "contexts" stored in DB 0.
+    pub async fn register_context_id(&self, id: u32) -> Result<()> {
+        let mut cm = self.manager_for_db(0).await?;
+        let _: i64 = redis::cmd("SADD")
+            .arg("contexts")
+            .arg(id)
+            .query_async(&mut cm)
+            .await
+            .map_err(|e| {
+                error!(db=0, context_id=%id, error=%e, "SADD contexts failed");
+                e
+            })?;
+        Ok(())
+    }
+
+    /// List all registered context ids from the global set in DB 0.
+    pub async fn list_context_ids(&self) -> Result<Vec<u32>> {
+        let mut cm = self.manager_for_db(0).await?;
+        // Using SMEMBERS and parsing into u32
+        let vals: Vec<String> = redis::cmd("SMEMBERS")
+            .arg("contexts")
+            .query_async(&mut cm)
+            .await
+            .map_err(|e| {
+                error!(db=0, error=%e, "SMEMBERS contexts failed");
+                e
+            })?;
+        let mut out = Vec::with_capacity(vals.len());
+        for v in vals {
+            if let Ok(n) = v.parse::<u32>() {
+                out.push(n);
+            }
+        }
+        out.sort_unstable();
+        Ok(out)
+    }
 }