docs: update Claude Code releases to v2.1.59

- v2.1.59: auto-memory (/memory), /copy command picker, smarter compound bash prefixes, MCP OAuth race condition fix, config corruption fix
- v2.1.58: Remote Control expanded to more users

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

guide/claude-code-releases.md

@@ -10,13 +10,13 @@ tags: [reference, release]
 > **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**: v2.1.56 | **Updated**: 2026-02-25
+**Latest**: v2.1.59 | **Updated**: 2026-02-26
 
 ---
 
 ## Quick Jump
 
-- [2.1.x Series (January-February 2026)](#21x-series-january-february-2026) — Worktree isolation, background agents, ConfigChange hook, Fast mode Opus 4.6, 1M context, claude.ai MCP connectors, remote-control, BashTool perf
+- [2.1.x Series (January-February 2026)](#21x-series-january-february-2026) — Worktree isolation, background agents, ConfigChange hook, Fast mode Opus 4.6, 1M context, claude.ai MCP connectors, remote-control, auto-memory, /copy command
 - [2.0.x Series (Nov 2025 - Jan 2026)](#20x-series-november-2025---january-2026) — Opus 4.5, Claude in Chrome, Background agents
 - [Breaking Changes Summary](#breaking-changes-summary)
 - [Milestone Features](#milestone-features)
@@ -25,6 +25,21 @@ tags: [reference, release]
 
 ## 2.1.x Series (January-February 2026)
 
+### v2.1.59 (2026-02-26)
+
+- **New**: Auto-memory — Claude automatically saves useful context to memory; manage with `/memory`
+- **New**: `/copy` command — interactive picker when code blocks are present, select individual blocks or full response
+- **Improved**: Smarter "always allow" prefix suggestions for compound bash commands (per-subcommand prefixes instead of treating whole command as one)
+- **Improved**: Memory usage in multi-agent sessions (releases completed subagent task state)
+- **Improved**: Ordering of short task lists
+- **Fixed**: MCP OAuth token refresh race condition when running multiple Claude Code instances simultaneously
+- **Fixed**: Shell commands not showing clear error message when working directory has been deleted
+- **Fixed**: Config file corruption that could wipe authentication when multiple Claude Code instances ran simultaneously
+
+### v2.1.58 (2026-02-26)
+
+- **Expanded**: Remote Control available to more users
+
 ### v2.1.56 (2026-02-25)
 
 - **Fixed**: VSCode: Another cause of "command 'claude-vscode.editor.openLast' not found" crashes

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: "2.1.56"
-updated: "2026-02-25"
+latest: "2.1.59"
+updated: "2026-02-26"
 
 # ════════════════════════════════════════════════════════════════
 # RELEASES (newest first, condensed highlights only)
@@ -15,6 +15,22 @@ releases:
   # 2.1.x Series (January-February 2026)
   # ─────────────────────────────────────────────────────────────
 
+  - version: "2.1.59"
+    date: "2026-02-26"
+    highlights:
+      - "⭐ Auto-memory: Claude automatically saves useful context; manage with /memory"
+      - "⭐ /copy command: interactive picker for selecting individual code blocks or full response"
+      - "Smarter 'always allow' prefix suggestions for compound bash commands (per-subcommand prefixes)"
+      - "Fixed MCP OAuth token refresh race condition with multiple simultaneous instances"
+      - "Fixed config file corruption wiping authentication when multiple instances ran simultaneously"
+    breaking: []
+
+  - version: "2.1.58"
+    date: "2026-02-26"
+    highlights:
+      - "Remote Control expanded to more users"
+    breaking: []
+
   - version: "2.1.56"
     date: "2026-02-25"
     highlights: