feat: make /transfer bidirectional across telegram and tui

docs/plans/state.json

@@ -5107,10 +5107,32 @@
         "docs/plans/state.json"
       ],
       "test_status": "pnpm test:run src/backends/native/agent.test.ts passing"
+    },
+    "bidirectional-frontend-transfer-command": {
+      "status": "completed",
+      "date": "2026-02-18",
+      "updated": "2026-02-18",
+      "summary": "Promoted `/transfer` to a first-class command-registry command and implemented bidirectional `telegram <-> tui` session transfer semantics across channel and TUI paths. Added Telegram `/transfer` command ingestion (including `/transfer@bot ...` parsing), transfer fast-path handling in daemon routing, improved TUI transfer usage/no-op messaging, and expanded regression coverage.",
+      "files_modified": [
+        "src/commands/types.ts",
+        "src/commands/index.ts",
+        "src/commands/builtin/index.ts",
+        "src/commands/builtin/index.test.ts",
+        "src/daemon/routing.ts",
+        "src/daemon/routing.test.ts",
+        "src/channels/telegram/adapter.ts",
+        "src/channels/telegram/adapter.test.ts",
+        "src/frontends/tui/commands.ts",
+        "src/frontends/tui/commands.test.ts",
+        "src/cli/tui.ts",
+        "README.md",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/commands/builtin/index.test.ts src/daemon/routing.test.ts src/channels/telegram/adapter.test.ts src/frontends/tui/commands.test.ts passing + pnpm typecheck passing"
     }
   },
   "overall_progress": {
-    "total_test_count": 1895,
+    "total_test_count": 1900,
     "all_tests_passing": true,
     "p0_completion": "3/3 (100%)",
     "p1_completion": "4/4 (100%)",
@@ -5130,7 +5152,7 @@
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
     "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback",
     "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": "Monitor production feedback for the expanded sessions operator surface and prioritize next post-parity slice from reliability and capability roadmap"
+    "next_up": "Monitor production feedback for bidirectional session-transfer command behavior across Telegram/TUI and prioritize the next post-parity reliability/capability slice"
   },
   "soul_md_and_cron_create": {
     "date": "2026-02-11",