fix(opencode): Mac review of the Linux fixes - a clean db has no sidecars on Mac either, the placeholder needs its example, a home install must run, status and reconcile read the db read-only (Issue #60, PR #62)

- tests: macOS SQLite keeps -wal/-shm after the last close (persistent WAL);
  the `clean` state removes them after the checkpointing close
- the 2.x placeholder pattern requires the quoted example, so a typed
  `Ask anything…` is read as a draft
- auth_ok takes ~/.opencode/bin/opencode only as an executable file
- status.sh and reconcile.sh (drift C) open opencode.db with _ro_connect

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

.agents/skills/lib_py/agents/adapters/opencode.py

@@ -76,7 +76,8 @@ class OpenCodeAgentAdapter(BaseAgentAdapter):
     def input_placeholder_pattern(self) -> Optional[str]:
         # 2.x home screen: `Ask anything… "<example>"`, the example picked per
         # launch and cut without its closing quote in a narrow box (Issue #60).
-        return r'Ask anything(?:…|\.\.\.)(?: "[^"]*"?)?'
+        # The example is required: a bare `Ask anything…` is a typed draft.
+        return r'Ask anything(?:…|\.\.\.) "[^"]*"?'
 
     @property
     def input_rule_pattern(self) -> Optional[str]:
@@ -318,7 +319,8 @@ class OpenCodeAgentAdapter(BaseAgentAdapter):
         # opencode 2.x needs no login: a fresh HOME runs a free default model
         # and local providers have no key, so the binary is the whole check.
         home = os.environ.get("HOME_DIR") or os.environ.get("HOME") or os.path.expanduser("~")
-        return bool(shutil.which("opencode")) or os.path.exists(f"{home}/.opencode/bin/opencode")
+        local = f"{home}/.opencode/bin/opencode"
+        return bool(shutil.which("opencode")) or (os.path.isfile(local) and os.access(local, os.X_OK))
 
     def discover(self, ctx: DiscoveryContext) -> list:
         db = self._resolve_db(ctx)

.agents/skills/multi-agent-mux-monitor/scripts/reconcile.sh

@@ -950,7 +950,9 @@ for s in d.get('herdr_sessions', []):
 
     valid_candidates = []
     try:
-        conn = sqlite3.connect(odb)
+        # read-only: nothing is created or removed beside the agent's db (Issue #60)
+        from lib_py.agents.adapters.opencode import _ro_connect
+        conn = _ro_connect(odb)
         cursor = conn.cursor()
         # opencode 2.x keeps sessions in session_v2 (a migrated 1.x `session`
         # table is no longer written).

.agents/skills/multi-agent-mux-status/scripts/status.sh

@@ -112,8 +112,9 @@ def resume_on_disk(s):
             if not odb or not os.path.exists(odb):
                 return 'MISSING'
             try:
-                import sqlite3
-                conn = sqlite3.connect(odb)
+                # read-only: nothing is created or removed beside the agent's db (Issue #60)
+                from lib_py.agents.adapters.opencode import _ro_connect
+                conn = _ro_connect(odb)
                 r = conn.execute("SELECT 1 FROM session_v2 WHERE id=?", (u,)).fetchone()  # opencode 2.x
                 conn.close()
                 return 'yes' if r else 'MISSING'
@@ -312,8 +313,9 @@ def resume_on_disk(s):
             if not odb or not os.path.exists(odb):
                 return 'MISSING'
             try:
-                import sqlite3
-                conn = sqlite3.connect(odb)
+                # read-only: nothing is created or removed beside the agent's db (Issue #60)
+                from lib_py.agents.adapters.opencode import _ro_connect
+                conn = _ro_connect(odb)
                 r = conn.execute("SELECT 1 FROM session_v2 WHERE id=?", (u,)).fetchone()  # opencode 2.x
                 conn.close()
                 return 'yes' if r else 'MISSING'