docs: update Claude Code releases to v2.1.22

Added tracking for latest releases:
- v2.1.22: Task UI improvements, Vim fixes, LSP enhancements
- v2.1.21: Version requirements, TaskCreate enhancements, auto-update checks

Updated in both YAML (machine-readable) and Markdown (human-readable) formats.

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

guide/claude-code-releases.md

@@ -4,7 +4,7 @@
 > **Full details**: [github.com/anthropics/claude-code/CHANGELOG.md](https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md)
 > **Machine-readable**: [claude-code-releases.yaml](../machine-readable/claude-code-releases.yaml)
 
-**Latest**: v2.1.20 | **Updated**: 2026-01-27
+**Latest**: v2.1.22 | **Updated**: 2026-01-28
 
 ---
 
@@ -19,6 +19,29 @@
 
 ## 2.1.x Series (January 2026)
 
+### v2.1.22 (2026-01-28)
+
+- Improved task UI performance with virtualization — Task list now uses virtual scrolling for better responsiveness with many tasks
+- Vim selection and deletion fixes — Fixed visual mode selections and `dw` command behavior
+- LSP improvements: Kotlin support, UTF-16 range handling, better error recovery
+- Tasks now consistently use `task-N` IDs instead of internal UUIDs
+- Fixed: `#` keyboard shortcut not working in task creation fields
+- Fixed: Compact tool use rendering in chat history
+- Fixed: Session URL escaping in git commit messages
+- Fixed: Command output handling improvements
+
+### v2.1.21 (2026-01-28)
+
+- **Skills/commands can specify required/recommended Claude Code version** — Use `minClaudeCodeVersion` and `recommendedClaudeCodeVersion` in frontmatter
+- **New TaskCreate fields**: `category` (testing, implementation, documentation, etc.), `checklist` (subtasks as markdown list), `parentId` (task hierarchy)
+- **Automatic Claude Code update checking** at session start (respects auto-update settings)
+- Tasks appear in `/context` output with 'Disable tasks' shortcut for quick toggling
+- Improved task UI: Delete button added, better empty state messaging
+- Fixed: Task deletion now properly removes all related task data
+- Fixed: Shell environment variables expanded correctly in hook commands
+- Fixed: Pasted URLs with parentheses properly formatted in markdown
+- Fixed: Bash output capture for commands with large output
+
 ### v2.1.20 (2026-01-27)
 
 - **New**: TaskUpdate tool can delete tasks via `status="deleted"`
@@ -332,4 +355,4 @@
 
 ---
 
-*Last updated: 2026-01-25 | [Back to main guide](./ultimate-guide.md)*
+*Last updated: 2026-01-28 | [Back to main guide](./ultimate-guide.md)*

machine-readable/claude-code-releases.yaml

@@ -3,8 +3,8 @@
 # Purpose: Track Claude Code product releases for documentation sync
 # Maintained: Manual updates when new releases are announced
 
-latest: "2.1.20"
-updated: "2026-01-27"
+latest: "2.1.22"
+updated: "2026-01-28"
 
 # ════════════════════════════════════════════════════════════════
 # RELEASES (newest first, condensed highlights only)
@@ -15,6 +15,23 @@ releases:
   # 2.1.x Series (January 2026)
   # ─────────────────────────────────────────────────────────────
 
+  - version: "2.1.22"
+    date: "2026-01-28"
+    highlights:
+      - "Improved task UI performance with virtualization"
+      - "Vim selection and deletion fixes"
+      - "LSP improvements: Kotlin support, UTF-16 ranges"
+    breaking: []
+
+  - version: "2.1.21"
+    date: "2026-01-28"
+    highlights:
+      - "Skills/commands can specify required/recommended Claude Code version"
+      - "New TaskCreate fields: category, checklist, parentId"
+      - "Automatic Claude Code update checking at session start"
+      - "Tasks appear in /context with 'Disable tasks' shortcut"
+    breaking: []
+
   - version: "2.1.20"
     date: "2026-01-27"
     highlights: