Improve internal/beads test coverage from 48% to 80%
Add comprehensive tests for fingerprint.go:
- canonicalizeGitURL: URL normalization for HTTPS, SSH, SCP-style, HTTP, git protocol
- ComputeRepoID: With/without remote, not-git-repo, canonical URL consistency
- GetCloneID: Basic, different dirs, worktree, hostname inclusion
Add tests for beads.go:
- findDatabaseInBeadsDir: Direct tests for database discovery
- FindAllDatabases: Multi-database discovery, no-database, stops-at-first
Coverage: 48.4% → 80.2% (bd-tvu3)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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