fix: decode TUI input before routing

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

workplans/ADHOC-2026-08-25.md

@@ -0,0 +1,42 @@
+---
+id: TAMQ-WP-ADHOC-2026-08-25
+type: workplan
+title: "Recognize enhanced terminal submission keys"
+domain: communication
+repo: tmux-amq
+status: finished
+owner: codex
+topic_slug: coulomb-social
+created: "2026-08-25"
+updated: "2026-08-25"
+---
+
+# Recognize enhanced terminal submission keys
+
+## Decode Codex TUI line submission in the PTY tap
+
+```task
+id: TAMQ-WP-ADHOC-2026-08-25-T01
+status: done
+priority: high
+```
+
+Reproduce the missing `#repo:` route with a real isolated Codex TUI, extend
+input observation to recognize enhanced terminal Enter encodings without
+rewriting pane input, add regression and real-Codex smoke evidence, install the
+fix, and update the operator documentation.
+
+## Completion evidence
+
+- Reproduced the failure with two isolated real Codex 0.149.1 panes: Codex
+  submitted the source line but no durable message was created.
+- Raw input capture showed CSI cursor/device replies preceding the typed route;
+  these contaminated the tap's observation buffer before the terminating CR.
+- The observer now removes terminal protocol sequences and applies local
+  backspace editing only to its parsing copy while forwarding source bytes
+  unchanged.
+- A network-disabled two-Codex rerun created one durable `#audit-core:` message,
+  transitioned it to `injected`, and showed the `# from flex-auth:` prompt in
+  the target's queued follow-up inputs.
+- Full checks and installed-package verification passed. No user session or
+  durable user message was changed during diagnosis.