loopd: dispatch subagent, not the port

Co-Authored-By: ornith-1.5-35b-a3b <agent@wntrmute.dev>

docs/implementer-log.md

@@ -6,6 +6,7 @@ reviewer adds findings under "Reviews" once per milestone.
 
 | Task | Date | Status | Gate runs | First gate | Deviations | Notes | Model |
 |---|---|---|---|---|---|---|---|
+| M6a/02-loopd-subagent-dispatch | 2026-10-03 | done | 1 | pass | none | Copied the given test `crates/loopd/tests/subagent_dispatch.rs` from `docs/plans/M6a/files/`. Step 2 (`cargo build --tests --keep-going -p loopd`) failed as expected: E0599 no `Subagent` variant and E0425 no `child_id`. Added `Dispatch::Subagent { task }` in tools.rs D1, routed `subagent` in `dispatch` and `dispatch_call_tool` (D2/D3) via `crate::subagent::dispatch_args`, added the `Subagent` arm in `run_call` (turn.rs T1) calling the stub `run`, and appended `child_id`, `parse_task`, `dispatch_args` and the stub `run` to subagent.rs. `parse_task` walks every key (unknown field), requires `task`, demands a string task and a JSON object arguments, and maps errors to `denial_message(InvalidArguments, Some(&detail))`. `run` stays a compiling stub, no spawn, no `Runtime.ctx`. `cargo check -p loopd` clean, no warning; `wc -l` prints 76 for subagent.rs, 477 for tools.rs, 332 for turn.rs, all under 500. All suites pass: `subagent_dispatch` 3, `subagent_registry` 2, `tools` 11. `make gate` printed `gate: ok` with 1580 tests (1577 before, plus 3). No new dependency, so `Cargo.lock` unchanged. | ornith-1.5-35b-a3b |
 | M6a/01-loopd-subagent-registry | 2026-10-03 | done | 1 | pass | none | Copied the given test `crates/loopd/tests/subagent_registry.rs` from `docs/plans/M6a/files/`. Created `crates/loopd/src/subagent.rs` with `SUBAGENT` and `schema()` (a non-core `ToolSchema`, no `parse_task`/`dispatch_args`/`run`). Added `pub mod subagent;` after `pub mod sse;` in lib.rs (rustfmt order). Edited `m5c()` in tools.rs to push the non-core `subagent` entry after the `ask_memory` insert at index 3, so `ask_memory` stays at 3 and `subagent` is last among the non-core names; `core_schemas()` still returns only the six core names and `find("subagent")`/`find("isolated")` both hit it. `cargo check -p loopd` clean, no warning; `wc -l` prints 22 for subagent.rs and 470 for tools.rs, both under 500. All suites pass: `subagent_registry` 2, `ask_memory_tool`, `tools` 11, `baseline` 6. `make gate` printed `gate: ok` with 1577 tests (1575 before, plus 2). No new dependency, so `Cargo.lock` unchanged. | ornith-1.5-35b-a3b |
 | M5d2/11-loopd-heartbeat-failed-last | 2026-10-03 | done | 1 | pass | none | Copied the given test `crates/loopd/tests/scheduler_heartbeat_failed.rs` from `docs/plans/M5d2/files/`. Applied H1 in `crates/loopd/src/scheduler.rs` inside `heartbeat`: after the quoted block (found exactly once) the bookkeeping is now unconditional — `let _ = compact::finish_turn(...)` instead of binding `outcome`, then `drop(held)`, then `self.last_heartbeat = Some(now)` and `work.push(TickWork::Heartbeat)` with no `if outcome.is_ok()`. The unreadable-prompt and busy `return` paths stay untouched and never reach H1; cron `Finished`/`Failed` and the job arm are unchanged. `cargo test -p loopd --test scheduler_heartbeat_failed` failed first (`left: []`, `right: [Heartbeat]`), then passed with `scheduler_heartbeat` (6). `cargo check -p loopd` clean, no warning. `make gate` printed `gate: ok` with 1575 tests (1574 before, plus 1). No new dependency, so `Cargo.lock` unchanged. | ornith-1.5-35b-a3b |
 | M5d2/10-memoryd-tiers | 2026-10-03 | done | 2 | fail | none | Copied the given tests `crates/memoryd/tests/tiers.rs` and `crates/bxctl/tests/cli_memory_tiers.rs` and the starter `config/jobs/tier.toml.example` from `docs/plans/M5d2/files/`. Added `MemoryCommand::Tiers` after `Sync` in `bxcore/src/memory.rs` with the doc comment from M1. Created `crates/memoryd/src/tiers.rs` with `list`: identity entries first (memory.md then user.md via `store.entries`, each `hits 0  last -`), then notes from `notes::parse`, each joined to `recalls/` on `(noted, session, record)` where `hits` counts the lines holding a matching hit and `last` is the max `time` among them or `-`; moved/dropped notes are still listed as `note` with class `private` and `trusted`, and untrusted notes are marked. `recalls/` is read via `store.path("recalls")`: a missing directory yields an empty tally (all zeros), a file that exists but cannot be read is an error, and a line that does not parse is skipped. `Logged` and `Hit` deserialize without `deny_unknown_fields` so `epoch` and `query` on a line are ignored. Used a small `Tally { n: u64, last: String }` so the map is `HashMap<(String, i64), Tally>` and clippy's `type_complexity` stays off. Added `pub mod tiers;` after `pub mod socket;` in lib.rs, the `Tiers` arm in `serve/admin.rs`, `["tiers"]` in bxctl/src/memory.rs, `| tiers` in the USAGE line, and the edited USAGE pin in cli_memory_sync.rs (left cli_memory.rs untouched). First `make gate` failed on a third leading space I had put on the USAGE memory line, which the `usage_explains_the_speaker_flag` indentation check caught; restored it to two spaces. `cargo check` clean, no warning; `wc -l` prints 139 for tiers.rs. All suites pass: `tiers` 4, `cli_memory_tiers` 2 (plus `cli_memory` 4 and `cli_memory_sync` 4). `make gate` printed `gate: ok` with 1574 tests (1568 before, plus 6). No new dependency, so `Cargo.lock` unchanged. | ornith-1.5-35b-a3b |