feat: add hash routing for pushy agents

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a03397-4d51-7fd1-8ff2-946eb22ea2bc

SCOPE.md

@@ -22,10 +22,11 @@ tamq does not choose or infer them.
 - Sanitized one-time output notifications through target tmux pane PTYs, with
   inbox-only delivery as an explicit option and no foreground-process input.
 - Explicit experimental pushy delivery that submits a sanitized comment and
-  Enter to target pane input for known queue-capable interactive programs.
+  Enter to target pane input for known queue-capable interactive programs,
+  with `#repo:` routing observed through the PTY tap.
 - Explicit opt-in control-mode pane delivery and the full-duplex `tamq tap` PTY
   broker for integration experiments.
-- Exact `gita` repository validation and direct `@repo: message` routing.
+- Exact `gita` repository validation and direct `@repo:`/`#repo:` routing.
 - Unix-socket operations for local clients and a future coordination-engine
   adapter.
 - Policy profiles, safety-gated retries, local diagnostics, tests, packaging,
@@ -51,12 +52,12 @@ transport.
 
 | Intent capability | State | Evidence and remaining gap |
 | --- | --- | --- |
-| Direct repository addressing | Implemented for local alpha | Exact `gita` validation, per-session `@repo`/`@repo:` commands, a bare `@` composer with latest-counterparty default and Tab recipient cycling, and long-form parsing are covered without modifying shell configuration. |
+| Direct repository addressing | Implemented for local alpha | Exact `gita` validation, per-session `@repo`/`@repo:` shell commands, tapped `#repo:` agent-input routing, a bare `@` composer with latest-counterparty default and Tab recipient cycling, and long-form parsing are covered. |
 | Durable, inspectable local queue | Implemented | SQLite history, manual inbox, leases, endpoint records, inspect/history, JSONL export/replay, acknowledgement, and purge are present. |
 | Local socket service | Implemented | Peer-credential checks and structured ping/register/send/history/ack/endpoints/disconnect operations are tested. |
 | Neutral tmux session lifecycle | Implemented for local alpha | Repository-first startup opens untouched shells at exact gita paths, exports per-window identity, and runs no initial command unless `--command` is explicit. Stable reuse, service restart, and cleanup are covered by the installed-package test. |
 | Safe manual messaging | Implemented for local alpha | Normal endpoints write one sanitized comment above a stable shell input row without injecting stdin; conservative fallback handles the first row and alternate screens. Messages remain pending until acknowledgement. Inbox-only manual mode is explicit with `--no-display`. |
-| Experimental pushy delivery | Explicit opt-in | `--mode pushy` submits one sanitized sender-labelled comment plus Enter through a checked tmux command. It marks successful delivery `injected`, but cannot identify pane occupants or protect input already being edited. |
+| Experimental pushy delivery | Explicit opt-in | `--mode pushy --command ...` observes outbound `#repo:`/`@repo:` lines and submits a non-routable `# from sender:` envelope plus Enter through a checked tmux command. It marks successful delivery `injected`, but cannot identify pane occupants or protect input already being edited. |
 | Full-duplex input observation | Explicit opt-in | `--tap --command ...` enables the PTY integration path. It is absent from neutral startup and remains covered for geometry, resize, raw mouse input, and lifecycle behavior. |
 | Bounded retry behavior | Not enforced | Failed output or injection remains pending and becomes claimable after lease expiry, but no attempt counter or terminal failure state applies the configured cap. |
 | Acknowledgement policy | Partially implemented | Terminal output remains pending until explicit acknowledgement, while legacy pane injection becomes `injected`; the configured `delivery_ack_mode` does not yet govern both paths. |
@@ -70,8 +71,10 @@ shells at exact gita paths without sending initial keystrokes. The test proved
 per-window repository identity, stable reuse, shell-native addressing,
 latest-counterparty replies, comment-safe target output above an unchanged
 partial input line and cursor, inbox/filter/ack exchange, zero target-input
-mutation, service restart, endpoint disappearance, explicit initial-command
-startup, and cleanup.
+mutation in safe modes, service restart, endpoint disappearance, explicit
+initial-command startup, and cleanup. Isolated pushy-mode coverage additionally
+proves one `#repo:` route, one non-routable target submission, and no feedback
+message.
 
 Suitable today:
 
@@ -95,7 +98,7 @@ Not yet suitable:
   and stronger process-supervision evidence.
 - Cross-host messaging or use as a general-purpose broker.
 
-The suite currently has 117 passing tests and 77% statement coverage. Coverage
+The suite currently has 120 passing tests and 77% statement coverage. Coverage
 is strongest in durable storage and registry handling, and weakest in the PTY
 tap and CLI orchestration; PTY statement coverage increased from 23% to 33%,
 while subprocess behavior is primarily proven by the real-tmux test. The