refactor: remove sqlite routing

codex_telegram_bridge/readme.md

@@ -23,7 +23,7 @@ chat_id = 123456789
 
 Optional keys:
 
-- common: `bridge_db`, `allowed_chat_ids`, `startup_chat_ids`
+- common: `allowed_chat_ids`, `startup_chat_ids`
 - exec/resume: `startup_message`, `codex_cmd`, `codex_workspace`, `codex_exec_args`, `max_workers`, `codex_io_mode`, `codex_command_timeout_s`, `codex_no_child_timeout_s`
 
 ## Option 1: exec/resume
@@ -46,11 +46,14 @@ Optional flags:
 - `--workdir PATH` (override `codex_workspace`)
 - `--model NAME` (pass through to `codex exec`)
 
+To resume an existing thread without a database, reply with (or include) the session id shown at the end of the bot response:
+
+`resume: \`019b66fc-64c2-7a71-81cd-081c504cfeb2\``
+
 ## Files
 - `src/codex_telegram_bridge/constants.py`: limits and config path constants
 - `src/codex_telegram_bridge/config.py`: config loading and chat-id parsing helpers
 - `src/codex_telegram_bridge/exec_render.py`: renderers for codex exec JSONL events
 - `src/codex_telegram_bridge/rendering.py`: markdown rendering
-- `src/codex_telegram_bridge/routes.py`: sqlite routing store
 - `src/codex_telegram_bridge/telegram_client.py`: Telegram Bot API client
 - `src/codex_telegram_bridge/exec_bridge.py`: codex exec + resume bridge

codex_telegram_bridge/src/codex_telegram_bridge/exec_bridge.py

@@ -7,6 +7,7 @@ from __future__ import annotations
 
 import json
 import os
+import re
 import shlex
 import subprocess
 import threading
@@ -21,7 +22,6 @@ from .config import load_telegram_config
 from .constants import TELEGRAM_HARD_LIMIT
 from .exec_render import ExecProgressRenderer, ExecRenderState, render_event_cli
 from .rendering import render_markdown
-from .routes import RouteStore
 from .telegram_client import TelegramClient
 
 # -------------------- Codex runner --------------------
@@ -343,7 +343,6 @@ def run(
     setup_file_logger(log_file if log_file else None)
     config = load_telegram_config()
     token = config["bot_token"]
-    db_path = config.get("bridge_db", "./bridge_routes.sqlite3")
 
     def _as_int_set(value: Any) -> set[int]:
         if isinstance(value, int):
@@ -389,7 +388,6 @@ def run(
         extra_args.extend(["-c", "notify=[]"])
 
     bot = TelegramClient(token)
-    store = RouteStore(db_path)
     runner = CodexExecRunner(codex_cmd=codex_cmd, workspace=workspace, extra_args=extra_args)
 
     max_workers = config.get("max_workers")
@@ -484,14 +482,6 @@ def run(
                 thread_id = evt.get("thread_id")
                 if isinstance(thread_id, str) and thread_id:
                     session_box["id"] = thread_id
-                    if progress_id is not None:
-                        store.link(
-                            chat_id,
-                            progress_id,
-                            "exec",
-                            thread_id,
-                            meta={"workspace": workspace},
-                        )
             if progress_renderer.note_event(evt) and progress is not None:
                 elapsed = time.monotonic() - started_at
                 msg = progress_renderer.render_progress(elapsed)
@@ -515,11 +505,9 @@ def run(
         except Exception as e:
             _stop_background()
             err = _clamp_tg_text(f"Error:\n{e}")
-            route_id = session_box["id"] or resume_session or "unknown"
             if progress_id is not None and len(err) <= TELEGRAM_TEXT_LIMIT:
                 try:
                     bot.edit_message_text(chat_id=chat_id, message_id=progress_id, text=err)
-                    store.link(chat_id, progress_id, "exec", route_id, meta={"error": True})
                     log(
                         "[handle] error "
                         f"chat_id={chat_id} user_msg_id={user_msg_id} "
@@ -534,8 +522,6 @@ def run(
                 text=err,
                 reply_to_message_id=user_msg_id,
             )
-            for m in sent_msgs:
-                store.link(chat_id, m["message_id"], "exec", route_id, meta={"error": True})
             log(
                 "[handle] error "
                 f"chat_id={chat_id} user_msg_id={user_msg_id} resume_session={resume_session!r} err={e}"
@@ -549,6 +535,7 @@ def run(
         elapsed = time.monotonic() - started_at
         status = "done" if saw_agent_message else "error"
         final_md = progress_renderer.render_final(elapsed, answer, status=status)
+        final_md = final_md + f"\n\nresume: `{session_id}`"
         final_text, final_entities = render_markdown(final_md)
         can_edit_final = progress_id is not None and len(final_text) <= TELEGRAM_TEXT_LIMIT
 
@@ -558,8 +545,6 @@ def run(
                 text=final_md,
                 reply_to_message_id=user_msg_id,
             )
-            for m in sent_msgs:
-                store.link(chat_id, m["message_id"], "exec", session_id, meta={"workspace": workspace})
             if progress_id is not None:
                 try:
                     bot.delete_message(chat_id=chat_id, message_id=progress_id)
@@ -575,7 +560,6 @@ def run(
                 text=final_text,
                 entities=final_entities or None,
             )
-            store.link(chat_id, progress_id, "exec", session_id, meta={"workspace": workspace})
 
         log(
             "[handle] done "
@@ -632,23 +616,20 @@ def run(
                 f"chat_id={chat_id} user_msg_id={user_msg_id} text={_one_line(text)}"
             )
 
-            # If user replied to a bot message, route to that session
-            resume_session: Optional[str] = None
-            r = msg.get("reply_to_message")
-            if r and "message_id" in r:
-                route = store.resolve(chat_id, r["message_id"])
-                if route and route.route_type == "exec":
-                    resume_session = route.route_id
-                    log(
-                        "[telegram] resolved reply route "
-                        f"chat_id={chat_id} bot_message_id={r['message_id']} session_id={resume_session!r}"
-                    )
-                else:
-                    log(
-                        "[telegram] reply has no exec route "
-                        f"chat_id={chat_id} bot_message_id={r['message_id']}"
+            uuid_re = re.compile(
+                r"(?i)\\b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\\b"
             )
 
+            def _extract_session_id(value: Optional[str]) -> Optional[str]:
+                if not value:
+                    return None
+                m = uuid_re.search(value)
+                return m.group(0) if m else None
+
+            resume_session = _extract_session_id(text)
+            r = msg.get("reply_to_message") or {}
+            resume_session = resume_session or _extract_session_id(r.get("text"))
+
             pool.submit(handle, chat_id, user_msg_id, text, resume_session)
 
 

codex_telegram_bridge/src/codex_telegram_bridge/routes.py

@@ -1,85 +0,0 @@
-from __future__ import annotations
-
-import json
-import os
-import sqlite3
-import time
-from dataclasses import dataclass
-from typing import Any, Dict, Optional
-
-
-def _now_unix() -> int:
-    return int(time.time())
-
-
-@dataclass(frozen=True)
-class Route:
-    route_type: str  # "exec"
-    route_id: str    # session_id
-    meta: Dict[str, Any]
-
-
-class RouteStore:
-    """
-    Stores mapping: (chat_id, bot_message_id) -> route
-    so Telegram replies can be routed.
-    """
-
-    def __init__(self, path: str) -> None:
-        os.makedirs(os.path.dirname(path) or ".", exist_ok=True)
-        self._conn = sqlite3.connect(path, check_same_thread=False)
-        self._conn.execute("PRAGMA journal_mode=WAL;")
-        self._conn.execute(
-            """
-            CREATE TABLE IF NOT EXISTS routes (
-              chat_id INTEGER NOT NULL,
-              bot_message_id INTEGER NOT NULL,
-              route_type TEXT NOT NULL,
-              route_id TEXT NOT NULL,
-              meta_json TEXT,
-              created_at INTEGER NOT NULL,
-              PRIMARY KEY (chat_id, bot_message_id)
-            );
-            """
-        )
-        self._conn.execute(
-            "CREATE INDEX IF NOT EXISTS idx_routes_route_id ON routes(route_id);"
-        )
-        self._conn.commit()
-
-    def link(
-        self,
-        chat_id: int,
-        bot_message_id: int,
-        route_type: str,
-        route_id: str,
-        meta: Optional[Dict[str, Any]] = None,
-    ) -> None:
-        meta_json = json.dumps(meta or {}, ensure_ascii=False)
-        self._conn.execute(
-            """
-            INSERT OR REPLACE INTO routes(chat_id, bot_message_id, route_type, route_id, meta_json, created_at)
-            VALUES(?, ?, ?, ?, ?, ?)
-            """,
-            (chat_id, bot_message_id, route_type, route_id, meta_json, _now_unix()),
-        )
-        self._conn.commit()
-
-    def resolve(self, chat_id: int, bot_message_id: int) -> Optional[Route]:
-        cur = self._conn.execute(
-            """
-            SELECT route_type, route_id, meta_json
-            FROM routes
-            WHERE chat_id = ? AND bot_message_id = ?
-            """,
-            (chat_id, bot_message_id),
-        )
-        row = cur.fetchone()
-        if not row:
-            return None
-        route_type, route_id, meta_json = row
-        try:
-            meta = json.loads(meta_json) if meta_json else {}
-        except json.JSONDecodeError:
-            meta = {}
-        return Route(route_type=route_type, route_id=route_id, meta=meta)

codex_telegram_bridge/src/codex_telegram_bridge/telegram_client.py

@@ -116,23 +116,14 @@ class TelegramClient:
         rendered_text, entities = render_markdown(text)
         limit = min(chunk_len, TELEGRAM_HARD_LIMIT)
         if len(rendered_text) > limit:
-            suffix = "\n" + ELLIPSIS
-            keep = max(0, limit - len(suffix))
-            rendered_text = rendered_text[:keep] + suffix
-            if entities:
-                trimmed: List[Dict[str, Any]] = []
-                for ent in entities:
-                    start = int(ent["offset"])
-                    length = int(ent["length"])
-                    if start >= keep:
-                        continue
-                    end = min(start + length, keep)
-                    if end <= start:
-                        continue
-                    d = dict(ent)
-                    d["length"] = end - start
-                    trimmed.append(d)
-                entities = trimmed
+            # Keep a tail section to preserve the "resume: `...`" line at the end.
+            # If we truncate, drop entities to avoid offset gymnastics.
+            sep = "\n" + ELLIPSIS + "\n"
+            tail_len = min(400, max(120, limit // 3))
+            tail = rendered_text[-tail_len:]
+            head_len = max(0, limit - len(sep) - len(tail))
+            rendered_text = rendered_text[:head_len] + sep + tail
+            entities = None
 
         msg = self.send_message(
             chat_id=chat_id,