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/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'