feat(config): support daemon.auto_* settings in config.yaml (GH#871)

Allow team-wide auto-sync configuration via config.yaml instead of SQLite.
This enables teams to share auto-commit/auto-push settings through version control.

Changes:
- Add daemon.auto_commit, daemon.auto_push, daemon.auto_pull to YamlOnlyKeys
- Add daemon.* prefix to YAML-only prefixes
- Update daemon startup to read from config.yaml first, then fall back to SQLite
- Update bd init --team to write daemon settings to config.yaml

Usage:
  # In .beads/config.yaml (version controlled, shared by team)
  daemon.auto_commit: true
  daemon.auto_push: true

  # Or via bd config set
  bd config set daemon.auto_commit true

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

internal/config/yaml_config_test.go

@@ -31,6 +31,12 @@ func TestIsYamlOnlyKey(t *testing.T) {
 		{"repos.primary", true},
 		{"external_projects.beads", true},
 
+		// Daemon settings (GH#871)
+		{"daemon.auto_commit", true},
+		{"daemon.auto_push", true},
+		{"daemon.auto_pull", true},
+		{"daemon.custom_setting", true}, // prefix match
+
 		// SQLite keys (should return false)
 		{"jira.url", false},
 		{"jira.project", false},