feat: add conversational replies and stable output

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

workplans/TAMQ-WP-0008-reply-shorthand-stable-output.md

@@ -4,7 +4,7 @@ type: workplan
 title: "Counterparty reply shorthand and stable terminal output"
 domain: communication
 repo: tmux-amq
-status: active
+status: finished
 owner: codex
 topic_slug: coulomb-social
 planning_priority: P0
@@ -42,7 +42,7 @@ restore the cursor. The current input row and cursor position remain stable.
 
 ```task
 id: TAMQ-WP-0008-T01
-status: progress
+status: done
 priority: high
 state_hub_task_id: "aad3dea8-b5c9-5b07-97bb-92aba18137d8"
 ```
@@ -57,7 +57,7 @@ transport, and refuse collision with an unrelated existing `@` command.
 
 ```task
 id: TAMQ-WP-0008-T02
-status: todo
+status: done
 priority: high
 state_hub_task_id: "f9893aba-e2b4-50da-9632-0f2e7f3b8c45"
 ```
@@ -72,7 +72,7 @@ row exists above the cursor. Never emit input bytes.
 
 ```task
 id: TAMQ-WP-0008-T03
-status: todo
+status: done
 priority: high
 state_hub_task_id: "f81290ce-5bf6-5c08-a0b1-efb2fb8b5782"
 ```
@@ -87,7 +87,7 @@ message becomes visible immediately above them.
 
 ```task
 id: TAMQ-WP-0008-T04
-status: todo
+status: done
 priority: high
 state_hub_task_id: "944c7fea-2e7c-5fcc-9fc6-1abc6a8cc784"
 ```
@@ -95,3 +95,14 @@ state_hub_task_id: "944c7fea-2e7c-5fcc-9fc6-1abc6a8cc784"
 Update help, README, and SCOPE; run complete checks; install the build; exercise
 `@ MESSAGE` in both directions in a live two-window session; and retain only
 user messages pending after acknowledging controlled smoke records.
+
+## Completion evidence
+
+- `make check`: 100 tests passed, including a real tmux pane proving that a
+  partial input row and both cursor coordinates remain unchanged.
+- Coverage: 76% overall; terminal framing is 84% and control handling is 81%.
+- `make install`: installed `tmux-amq==0.1.0` and verified `tamq --version`.
+- Live `flex-auth`/`audit-core`: bare `@` routed in both directions. Incoming
+  comments appeared immediately above `SECOND-PARTIAL` and `THIRD-PARTIAL`
+  without moving either cursor. Only the three controlled smoke messages were
+  acknowledged; all pre-existing user messages remain pending.