feat(tui): add multiline paste mode in minimal UI

docs/plans/state.json

@@ -3,6 +3,21 @@
   "updated_at": "2026-02-23",
   "description": "Tracks the status of all Flynn plans and implementation phases",
   "plans": {
+    "minimal-tui-multiline-paste-mode": {
+      "status": "completed",
+      "date": "2026-02-23",
+      "updated": "2026-02-23",
+      "summary": "Added multiline compose support to minimal TUI via `/paste` (alias `/multiline`) so users can enter/paste multi-line prompts without truncation. The mode collects lines until a single `.` terminator and submits one combined message. Also added fullscreen-mode handling for the new command plus parser/help/tooltip coverage and multiline flow tests.",
+      "files_modified": [
+        "src/frontends/tui/commands.ts",
+        "src/frontends/tui/minimal.ts",
+        "src/frontends/tui/components/App.tsx",
+        "src/frontends/tui/commands.test.ts",
+        "src/frontends/tui/minimal.test.ts",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/frontends/tui/commands.test.ts src/frontends/tui/minimal.test.ts + pnpm typecheck passing"
+    },
     "toolloop-execution-claim-recovery": {
       "status": "completed",
       "date": "2026-02-23",
@@ -6311,7 +6326,7 @@
     }
   },
   "overall_progress": {
-    "total_test_count": 1962,
+    "total_test_count": 1965,
     "all_tests_passing": true,
     "p0_completion": "3/3 (100%)",
     "p1_completion": "4/4 (100%)",
@@ -6333,6 +6348,7 @@
     "gmail_filter_creation": "completed — gmail.filter.create tool added with criteria/action validation; gmail-auth now requests full Gmail scope (https://mail.google.com/) for complete filter permissions",
     "toolloop_action_intent_recovery": "completed — when a model claims it will execute a tool but emits no tool call, NativeAgent now issues one internal nudge and continues the same turn to execute tools or produce a concrete blocker",
     "toolloop_execution_claim_recovery": "completed — when a model claims a known tool already succeeded/failed without emitting a tool call, NativeAgent now nudges once and retries the same turn before returning text",
+    "minimal_tui_multiline_paste_mode": "completed — minimal TUI now supports `/paste`/`/multiline` multiline compose mode ending with single '.' line, preventing newline truncation for pasted prompts",
     "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback, plus 2026-02-23 arg hydration hardening, tool.args_rewritten audit metric, transient fetch retry/timeout hardening, localhost->127.0.0.1 fallback for transcription endpoint connectivity, and whisper docker-compose entrypoint arg fix for port 18801",
     "remaining_phases_completion": "Phase 1: 3/3 (100%) — context levels, command registry, memory structure. Phase 2: 3/3 (100%) — component registry, confidence routing, history index. Phase 3: 2/2 (100%) — adaptive memory/compaction, truthfulness/autonomy hardening",
     "next_up": "Track OpenClaw evolution regularly for inspiration and feature ideas"