feat(config): persist ignore_repos in daemon registry

- Add ignore_repos field to DaemonInfo dataclass
- Store in startup-config.json per-daemon
- Backward compatible (defaults to empty list)
- Eliminates need for environment variables

Usage: Edit ~/.config/commits/startup-config.json and add:
  "ignore_repos": ["repo-name-1", "repo-name-2"]

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/auto_commit_service/cli/registry.py

@@ -30,6 +30,7 @@ class DaemonInfo:
     repos: list[str]
     started_at: str
     last_seen: str
+    ignore_repos: list[str] = field(default_factory=list)
 
     def to_dict(self) -> dict[str, Any]:
         """Convert to dictionary for JSON serialization."""
@@ -45,6 +46,7 @@ class DaemonInfo:
             "repos": self.repos,
             "started_at": self.started_at,
             "last_seen": self.last_seen,
+            "ignore_repos": self.ignore_repos,
         }
 
     @classmethod
@@ -62,6 +64,7 @@ class DaemonInfo:
             repos=data.get("repos", []),
             started_at=data["started_at"],
             last_seen=data["last_seen"],
+            ignore_repos=data.get("ignore_repos", []),
         )
 
 
@@ -208,6 +211,7 @@ def create_daemon_info(
     recursive: bool,
     recursive_depth: int | None,
     cache_update_minutes: int,
+    ignore_repos: list[str] | None = None,
 ) -> DaemonInfo:
     """Create a new DaemonInfo with generated ID and timestamps."""
     daemon_id = str(uuid.uuid4())[:8]
@@ -228,4 +232,5 @@ def create_daemon_info(
         repos=repos,
         started_at=timestamp,
         last_seen=timestamp,
+        ignore_repos=ignore_repos or [],
     )