chore(release): bump version to 0.48.0

Release highlights:
- VersionedStorage interface for pluggable backends
- bd types command and enhancement type alias
- bd close -m flag (git commit convention)
- RepoContext API for centralized git operations
- Dolt backend improvements (WIP)
- Many bug fixes for doctor, sync, hooks, worktrees

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

CHANGELOG.md

@@ -7,6 +7,85 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.48.0] - 2026-01-17
+
+### Added
+
+- **VersionedStorage interface** - Abstract storage layer with history/diff/branch operations
+  - Enables pluggable backends (SQLite, Dolt) with unified API
+  - Supports time-travel queries and branching semantics
+
+- **`bd sync` command specification** - Formalized sync workflow implementation
+  - Clearer separation between export, import, and merge phases
+
+- **`bd types` command** - List valid issue types (#1102)
+  - Shows all available types with descriptions
+
+- **"enhancement" type alias** - Alternative name for "feature" type
+  - Matches GitHub issue label conventions
+
+- **`bd close -m` flag** - Alias for `--reason` (git commit convention)
+  - More intuitive for git users: `bd close <id> -m "reason"`
+
+- **RepoContext API** - Centralized git operations context (#1102)
+  - Consistent git directory handling across codebase
+
+- **Dolt backend improvements (WIP)**
+  - Automatic bootstrap from JSONL on first access
+  - Git hook infrastructure for Dolt operations
+  - `bd compact --dolt` flag for Dolt garbage collection
+
+### Fixed
+
+- **Doctor sync branch health check** - Removed destructive --fix behavior (GH#1062)
+  - No longer warns about expected source file differences
+  - Prevents accidental sync branch history destruction
+
+- **Duplicate merge target selection** - Use combined weight (GH#1022)
+  - Considers both dependents and dependencies when choosing merge target
+  - Prevents closing issues with children/dependencies
+
+- **Worktree exclude paths** - Use --git-common-dir for correct paths (GH#1053)
+  - Fixes `bd init --stealth` in git worktrees
+
+- **Daemon git.author config** - Apply configured author to sync commits
+  - Respects `git.author` config and `BD_GIT_AUTHOR` env var
+
+- **Hook chaining preservation** - Prevent --chain from destroying original hooks (#1120)
+  - Backs up existing hooks before chaining
+
+- **Sync routed prefixes** - Allow routed prefixes in import validation
+  - Fixes multi-prefix workflow issues
+
+- **Windows CGO-free builds** - Enable building without CGO (#1117)
+  - Improved Windows compatibility
+
+- **Shell completions without database** - Work without .beads/ (#1118)
+  - Completions function in non-beads directories
+
+- **Timestamp normalization** - Normalize to UTC for validation (#1123)
+  - Prevents timezone-related validation failures
+
+- **Symlinked .beads directories** - Correct routing for symlinks (#1112)
+  - Proper resolution of symlinked beads directories
+
+- **Nil pointer in ResolvePartialID** - Prevent panic (#1132)
+  - Guards against nil pointer dereference
+
+- **Orphaned dependencies on delete** - Mark dependents dirty (#1130)
+  - Prevents orphan deps in JSONL after issue deletion
+
+- **Git hooks in worktrees** - Fix hook execution (#1126)
+  - Hooks now work correctly in linked worktrees
+
+### Documentation
+
+- **CLI skill reference** - Synced with v0.47.1 commands
+  - Updated command documentation in claude-plugin
+
+- **AGENTS.md fixes** - Removed references to nonexistent CLAUDE.md
+  - Corrected cross-references in documentation
+
 ## [0.47.2] - 2026-01-14
 
 ### Added