diff --git a/01-slash-commands/README.md b/01-slash-commands/README.md
index 3551bd6..4083e57 100644
--- a/01-slash-commands/README.md
+++ b/01-slash-commands/README.md
@@ -28,7 +28,7 @@ Built-in commands are shortcuts for common actions. There are **60+ built-in com
 | `/btw <question>` | Ask an ephemeral side question while Claude is working on the main task; doesn't pollute the main conversation context |
 | `/chrome` | Configure Chrome browser integration |
 | `/clear` | Clear conversation (aliases: `/reset`, `/new`) |
-| `/color [color\|default]` | Set prompt bar color |
+| `/color [color\|default]` | Set prompt bar color. Bare `/color` (no args) picks a random session color (v2.1.128+); pass a color name or hex to set explicitly. |
 | `/compact [instructions]` | Compact conversation with optional focus instructions |
 | `/config` | Open Settings (alias: `/settings`) |
 | `/context` | Visualize context usage as colored grid |
@@ -601,8 +601,8 @@ If both exist with the same name, the **skill takes precedence**. Remove one or
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/slash-commands
 - https://code.claude.com/docs/en/interactive-mode
diff --git a/02-memory/README.md b/02-memory/README.md
index 4891ac5..cb79331 100644
--- a/02-memory/README.md
+++ b/02-memory/README.md
@@ -1198,11 +1198,11 @@ For the most up-to-date information, refer to the official Claude Code documenta
 - [Official Memory Docs](https://code.claude.com/docs/en/memory) - Anthropic documentation
 
 ---
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/memory
 - https://code.claude.com/docs/en/settings
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.117
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/03-skills/README.md b/03-skills/README.md
index b3424a7..af3d6a1 100644
--- a/03-skills/README.md
+++ b/03-skills/README.md
@@ -649,6 +649,27 @@ Skill(deploy *)
 
 **Hide individual skills** by adding `disable-model-invocation: true` to their frontmatter.
 
+### Controlling Skill Override Behavior (`skillOverrides`)
+
+When a project skill and a user skill share the same name, project wins by default. The `skillOverrides` setting (v2.1.129+) lets you tune this. Add it to `~/.claude/settings.json` or project `.claude/settings.json`:
+
+```json
+{
+  "skillOverrides": "name-only"
+}
+```
+
+Accepted values:
+
+| Value | Behavior |
+|-------|----------|
+| `"on"` (default) | A repo skill can override a user skill of the same name. |
+| `"off"` | Disable overriding entirely — user skills always win. |
+| `"name-only"` | Match overrides only on skill name (ignore description / source). |
+| `"user-invocable-only"` | Only user-invocable skills can be overridden — model-invoked skills always come from their original location. |
+
+Useful when team policy says "user-defined skills must always take precedence" (`"off"`) or "only allow narrow name-based overrides" (`"name-only"`).
+
 ## Best Practices
 
 ### 1. Make Descriptions Specific
@@ -823,8 +844,8 @@ Once you start building skills seriously, two things become essential: a library
 - [Hooks Guide](../06-hooks/) - Event-driven automation
 
 ---
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/skills
 - https://code.claude.com/docs/en/settings
diff --git a/04-subagents/README.md b/04-subagents/README.md
index ccb2d4f..bd6dd30 100644
--- a/04-subagents/README.md
+++ b/04-subagents/README.md
@@ -1217,11 +1217,11 @@ graph TD
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/sub-agents
 - https://code.claude.com/docs/en/agent-teams
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.117
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/05-mcp/README.md b/05-mcp/README.md
index 69d1588..8476f02 100644
--- a/05-mcp/README.md
+++ b/05-mcp/README.md
@@ -194,6 +194,13 @@ sequenceDiagram
     Claude->>User: ✅ MCP connected!
 ```
 
+### `/mcp` command
+
+Type `/mcp` inside a session to list connected servers, trigger OAuth flows, and inspect connection state.
+
+- Since **v2.1.121**, MCP retries the initial connection up to 3 times on transient errors.
+- Since **v2.1.128**, `/mcp` displays the **tool count** for each connected server and visually flags servers reporting **0 tools** so misconfigured servers stand out at a glance.
+
 ## MCP Tool Search
 
 When MCP tool descriptions exceed 10% of the context window, Claude Code automatically enables tool search to efficiently select the right tools without overwhelming the model context.
@@ -1132,8 +1139,8 @@ export GITHUB_TOKEN="your_token"
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/mcp
 - https://code.claude.com/docs/en/changelog
diff --git a/06-hooks/README.md b/06-hooks/README.md
index 4f1dcda..f318c58 100644
--- a/06-hooks/README.md
+++ b/06-hooks/README.md
@@ -1366,11 +1366,11 @@ Edit `~/.claude/settings.json` or `.claude/settings.json` with the hook configur
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/hooks
 - https://code.claude.com/docs/en/changelog
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.118
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/07-plugins/README.md b/07-plugins/README.md
index b53efa7..1df585e 100644
--- a/07-plugins/README.md
+++ b/07-plugins/README.md
@@ -688,6 +688,12 @@ claude plugin install plugin-name@marketplace-name
 # CLI flag for local testing (repeatable for multiple plugins)
 claude --plugin-dir ./path/to/plugin
 claude --plugin-dir ./plugin-a --plugin-dir ./plugin-b
+
+# --plugin-dir also accepts a .zip archive path (v2.1.128+)
+claude --plugin-dir ./my-plugin.zip
+
+# Fetch a plugin .zip archive from a URL for the current session (v2.1.129+, repeatable)
+claude --plugin-url https://example.com/releases/my-plugin-0.3.0.zip
 ```
 
 ### From Git Repository
@@ -760,6 +766,12 @@ Before publishing, test your plugin locally using the `--plugin-dir` CLI flag (r
 ```bash
 claude --plugin-dir ./my-plugin
 claude --plugin-dir ./my-plugin --plugin-dir ./another-plugin
+
+# --plugin-dir accepts .zip archives in addition to directories (v2.1.128+)
+claude --plugin-dir ./my-plugin.zip
+
+# --plugin-url fetches a plugin .zip from a URL for this session (v2.1.129+, repeatable)
+claude --plugin-url https://example.com/releases/my-plugin-0.3.0.zip
 ```
 
 This launches Claude Code with your plugin loaded, allowing you to:
@@ -1037,12 +1049,12 @@ The following Claude Code features work together with plugins:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/plugins
 - https://code.claude.com/docs/en/plugin-marketplaces
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.117
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.118
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/07-plugins/devops-automation/README.md b/07-plugins/devops-automation/README.md
index 7acf8dc..43fe134 100644
--- a/07-plugins/devops-automation/README.md
+++ b/07-plugins/devops-automation/README.md
@@ -108,9 +108,9 @@ Result:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/plugins
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/07-plugins/documentation/README.md b/07-plugins/documentation/README.md
index 1c60a6c..a5b7514 100644
--- a/07-plugins/documentation/README.md
+++ b/07-plugins/documentation/README.md
@@ -120,9 +120,9 @@ export GITHUB_TOKEN="your_github_token"
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/plugins
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/07-plugins/pr-review/README.md b/07-plugins/pr-review/README.md
index 771644e..11f1f82 100644
--- a/07-plugins/pr-review/README.md
+++ b/07-plugins/pr-review/README.md
@@ -92,9 +92,9 @@ Result:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/plugins
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/08-checkpoints/README.md b/08-checkpoints/README.md
index 3ec5c2b..1d571b5 100644
--- a/08-checkpoints/README.md
+++ b/08-checkpoints/README.md
@@ -325,8 +325,8 @@ Remember: checkpoints are not a replacement for git. Use checkpoints for rapid e
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/checkpointing
 - https://code.claude.com/docs/en/settings
diff --git a/08-checkpoints/checkpoint-examples.md b/08-checkpoints/checkpoint-examples.md
index a2f015c..5b5bbd3 100644
--- a/08-checkpoints/checkpoint-examples.md
+++ b/08-checkpoints/checkpoint-examples.md
@@ -339,4 +339,8 @@ User: Now let's continue with the approach that worked.
 6. **Summarize long sessions**: Use "Summarize from here" to keep conversations manageable
 
 ---
-**Last Updated**: April 9, 2026
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
+**Sources**:
+- https://code.claude.com/docs/en/checkpointing
+- https://code.claude.com/docs/en/changelog
diff --git a/09-advanced-features/README.md b/09-advanced-features/README.md
index eba6a81..2b2db04 100644
--- a/09-advanced-features/README.md
+++ b/09-advanced-features/README.md
@@ -277,7 +277,7 @@ Extended thinking is a deliberate, step-by-step reasoning process where Claude:
 
 **Automatic activation**:
 - Enabled by default for all models (Opus 4.7, Sonnet 4.6, Haiku 4.5)
-- Opus 4.7: Adaptive reasoning with effort levels: `low` (○), `medium` (◐), `high` (●), `xhigh` (Opus 4.7 only, default on Claude Code since Opus 4.7 launch, 2026-04-16), `max`. Opus 4.6 and Sonnet 4.6 also support `low`, `medium`, `high`, `max` (no `xhigh`). Opus 4.7 has a 1M-token native context window (1M context fix landed in v2.1.117 — before that, `/context` miscounted Opus 4.7 against a 200K window and triggered premature autocompact).
+- Opus 4.7: Adaptive reasoning with effort levels: `low` (○), `medium` (◐), `high` (●), `xhigh` (Opus 4.7 only, default on Claude Code since Opus 4.7 launch, 2026-04-16), `max`. Opus 4.6 and Sonnet 4.6 also support `low`, `medium`, `high`, `max` (no `xhigh`). Opus 4.7 has a 1M-token native context window (1M context fix landed in v2.1.117 — before that, `/context` miscounted Opus 4.7 against a 200K window and triggered premature autocompact). Since v2.1.129, `/context` shows its visualization in-UI only; the ASCII viz no longer leaks into the conversation context (~1.6k tokens saved per call), so `/context` is safe to invoke freely.
 - Pro/Max subscribers on Opus 4.6 / Sonnet 4.6: default effort was raised from `medium` to `high` in v2.1.117.
 - Other models: Fixed budget up to 31,999 tokens
 
@@ -1100,7 +1100,7 @@ Claude Code supports keyboard shortcuts for efficiency. Here's the complete refe
 | `Ctrl+G` | Edit plan in external editor |
 | `Ctrl+L` | Clear terminal screen |
 | `Ctrl+O` | Toggle verbose output (view reasoning) |
-| `Ctrl+R` | Reverse search history |
+| `Ctrl+R` | Reverse search history. Defaults to **all prompts across all projects** (v2.1.129+); press `Ctrl+S` inside the picker to narrow to the current project. Earlier versions defaulted to project-only. |
 | `Ctrl+T` | Toggle task list view |
 | `Ctrl+B` | Background running tasks |
 | `Esc+Esc` | Rewind code/conversation |
@@ -1370,6 +1370,8 @@ Customize the push-to-talk keybinding in your keybindings file (`/keybindings`).
 
 Channels is a Research Preview feature that pushes events from external services into a running Claude Code session via MCP servers. Sources include Telegram, Discord, iMessage, and arbitrary webhooks, allowing Claude to react to real-time notifications without polling.
 
+> **Auth (v2.1.128+)**: `--channels` now works with both Pro/Max OAuth **and** API-key (console) authentication. Earlier releases required OAuth.
+
 ### Subscribing to Channels
 
 ```bash
@@ -1539,6 +1541,18 @@ To enable:
 
 Push notifications require a Claude subscription and the Claude mobile app.
 
+### Disabling Remote Control (`disableRemoteControl`, v2.1.128+)
+
+Admins on Team or Enterprise plans can block Remote Control entirely with the `disableRemoteControl` setting. When `true`, both `claude remote-control` and `/remote-control` refuse to start.
+
+```json
+{
+  "disableRemoteControl": true
+}
+```
+
+The setting is honored at the **managed/policy** scope (e.g., `/Library/Application Support/ClaudeCode/managed-settings.json` on macOS) so it cannot be overridden by individual users. Useful when local-only execution must be enforced organization-wide.
+
 ---
 
 ## Web Sessions
@@ -2007,9 +2021,16 @@ export CLAUDE_AUTOCOMPACT_PCT_OVERRIDE=80
 export CLAUDE_STREAM_IDLE_TIMEOUT_MS=30000
 export ANTHROPIC_CUSTOM_MODEL_OPTION=my-custom-model
 export SLASH_COMMAND_TOOL_CHAR_BUDGET=50000
+
+# Output and package manager (v2.1.129+)
+export CLAUDE_CODE_FORCE_SYNC_OUTPUT=1                      # Force synchronous output for terminals where auto-detect misses (Emacs eat, etc.)
+export CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE=1            # Enable background upgrades for Homebrew/WinGet installs
+export CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1         # Opt in to /v1/models gateway discovery when ANTHROPIC_BASE_URL is set
 ```
 
-> **v2.1.108**: `ENABLE_PROMPT_CACHING_1H=1` — use a 1-hour prompt cache TTL instead of the default 5-minute TTL. Reduces cache misses in long, stable sessions.
+> **v2.1.108**: `ENABLE_PROMPT_CACHING_1H=1` — use a 1-hour prompt cache TTL instead of the default 5-minute TTL. Reduces cache misses in long, stable sessions. (v2.1.129 fixes a regression where the 1-hour TTL was silently downgraded to 5 minutes.)
+
+> **v2.1.129**: `CLAUDE_CODE_FORCE_SYNC_OUTPUT=1` forces synchronous output for terminals whose capability auto-detection fails (e.g., Emacs `eat`). `CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE=1` enables background upgrades on Homebrew/WinGet installs, which otherwise never auto-update.
 
 ### Configuration Management Commands
 
@@ -2166,8 +2187,8 @@ For more information about Claude Code and related features:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/permission-modes
 - https://code.claude.com/docs/en/interactive-mode
diff --git a/09-advanced-features/planning-mode-examples.md b/09-advanced-features/planning-mode-examples.md
index f57bd79..6ee1d7a 100644
--- a/09-advanced-features/planning-mode-examples.md
+++ b/09-advanced-features/planning-mode-examples.md
@@ -533,4 +533,7 @@ Proceed with this plan? (yes/no/modify)
 7. **Plan for testing** at each phase
 
 ---
-**Last Updated**: April 9, 2026
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
+**Sources**:
+- https://code.claude.com/docs/en/changelog
diff --git a/10-cli/README.md b/10-cli/README.md
index c2350ea..6b08fb1 100644
--- a/10-cli/README.md
+++ b/10-cli/README.md
@@ -56,7 +56,7 @@ The older JavaScript bundle is still produced for Windows and for environments t
 | `claude remote-control` | Start Remote Control server | `claude remote-control` |
 | `claude plugin` | Manage plugins (install, enable, disable) | `claude plugin install my-plugin` |
 | `claude plugin tag <version>` | Create a release git tag for a plugin with version validation (v2.1.118+) | `claude plugin tag v0.3.0` |
-| `claude install [version]` | Install a specific native-binary version. Accepts `stable`, `latest`, or an explicit version string | `claude install 2.1.126` |
+| `claude install [version]` | Install a specific native-binary version. Accepts `stable`, `latest`, or an explicit version string | `claude install 2.1.131` |
 | `claude project purge [path]` | Delete all local Claude Code state for a project (transcripts, tasks, debug logs, file-edit history, prompt history, and `~/.claude.json` entry). Omit `[path]` for an interactive picker. Flags: `--dry-run` to preview, `-y/--yes` to skip confirmation, `-i/--interactive` to confirm each item, `--all` for every project (v2.1.126+) | `claude project purge ~/work/repo --dry-run` |
 | `claude plugin prune` | Remove orphaned auto-installed plugin dependencies (parent plugin gone). `plugin uninstall --prune` does the same cascade after uninstalling a target (v2.1.121+) | `claude plugin prune` |
 | `claude ultrareview [target]` | Run `/ultrareview` non-interactively. Prints findings to stdout, exits 0 on success / 1 on failure. Use `--json` for raw payload, `--timeout <minutes>` to override the 30-minute default (v2.1.120+) | `claude ultrareview 1234 --json` |
@@ -150,7 +150,7 @@ claude -p --model opus --fallback-model sonnet "analyze architecture"
 claude --model opusplan "design and implement the caching layer"
 ```
 
-> **Gateway model discovery (v2.1.126+)**: When `ANTHROPIC_BASE_URL` points at an Anthropic-compatible gateway, `/model` populates its picker from the gateway's `/v1/models` endpoint instead of the hard-coded list — useful for self-hosted proxies that expose a different model lineup.
+> **Gateway model discovery (v2.1.129+, opt-in)**: When `ANTHROPIC_BASE_URL` points at an Anthropic-compatible gateway, set `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1` to populate `/model` from the gateway's `/v1/models` endpoint. Without the env var, `/model` falls back to the built-in static list. The flag is opt-in (changed in v2.1.129) because the discovery call can surface models a user may not be entitled to use; v2.1.126 made it implicit and that behavior was reverted.
 
 ## System Prompt Customization
 
@@ -793,6 +793,9 @@ The "ultrathink" keyword in prompts activates deep reasoning. The `max` effort l
 | `OTEL_LOG_TOOL_DETAILS` | Set to `1` to unredact custom and MCP command names in OpenTelemetry events (v2.1.117+). Redaction remains the default. |
 | `ANTHROPIC_BEDROCK_SERVICE_TIER` | Selects the Bedrock service tier: `default`, `flex`, or `priority` (v2.1.122+) |
 | `AI_AGENT` | Set automatically on subprocesses so external CLIs (e.g., `gh`) can attribute traffic to Claude Code (v2.1.120+) |
+| `CLAUDE_CODE_FORCE_SYNC_OUTPUT` | Set to `1` to force synchronous output for terminals where auto-detection misses (e.g., Emacs `eat`) (v2.1.129+) |
+| `CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE` | Set to `1` to enable background upgrades for Homebrew/WinGet installs (which normally do not auto-update) (v2.1.129+) |
+| `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY` | Set to `1` to opt in to gateway `/v1/models` discovery when `ANTHROPIC_BASE_URL` is set. Without it, `/model` shows the built-in static list (v2.1.129+) |
 
 > **`ENABLE_TOOL_SEARCH` on Vertex AI (v2.1.119+)**: Tool search is **disabled by default on Google Cloud Vertex AI** deployments. Users who want the tool-search capability on Vertex must explicitly opt in with `export ENABLE_TOOL_SEARCH=true`. On direct Anthropic API it remains enabled by default.
 
@@ -900,8 +903,8 @@ claude -p --output-format json "query"
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/cli-reference
 - https://code.claude.com/docs/en/settings
@@ -911,5 +914,5 @@ claude -p --output-format json "query"
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.116
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.117
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.118
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/CATALOG.md b/CATALOG.md
index feda855..2ef34d6 100644
--- a/CATALOG.md
+++ b/CATALOG.md
@@ -7,7 +7,7 @@
 
 > Quick reference guide to all Claude Code features: commands, agents, skills, plugins, and hooks.
 
-**Navigation**: [Commands](#slash-commands) | [Permission Modes](#permission-modes) | [Subagents](#subagents) | [Skills](#skills) | [Plugins](#plugins) | [MCP Servers](#mcp-servers) | [Hooks](#hooks) | [Memory](#memory-files) | [New Features](#new-features-april-2026)
+**Navigation**: [Commands](#slash-commands) | [Permission Modes](#permission-modes) | [Subagents](#subagents) | [Skills](#skills) | [Plugins](#plugins) | [MCP Servers](#mcp-servers) | [Hooks](#hooks) | [Memory](#memory-files) | [New Features](#new-features-may-2026)
 
 ---
 
@@ -17,12 +17,12 @@
 |---------|----------|----------|-------|-----------|
 | **Slash Commands** | 60+ | 8 | 68+ | [01-slash-commands/](01-slash-commands/) |
 | **Subagents** | 6 | 11 | 17 | [04-subagents/](04-subagents/) |
-| **Skills** | 5 bundled | 4 | 9 | [03-skills/](03-skills/) |
+| **Skills** | 5 bundled | 6 | 11 | [03-skills/](03-skills/) |
 | **Plugins** | - | 3 | 3 | [07-plugins/](07-plugins/) |
 | **MCP Servers** | 1 | 8 | 9 | [05-mcp/](05-mcp/) |
 | **Hooks** | 28 events | 8 | 8 | [06-hooks/](06-hooks/) |
 | **Memory** | 7 types | 3 | 3 | [02-memory/](02-memory/) |
-| **Total** | **99** | **45** | **119** | |
+| **Total** | **99** | **47** | **121** | |
 
 ---
 
@@ -423,7 +423,7 @@ Persistent context loaded automatically across sessions.
 | **Project Rules** | `.claude/rules/` | Project (team) | Modular project rules |
 | **User** | `~/.claude/CLAUDE.md` | User (personal) | Personal preferences |
 | **User Rules** | `~/.claude/rules/` | User (personal) | Modular personal rules |
-| **Local** | `./CLAUDE.local.md` | Local (git-ignored) | Machine-specific overrides (not in official docs as of March 2026; may be legacy) |
+| **Local** | `./CLAUDE.local.md` | Local (git-ignored) | Machine-specific local overrides (gitignored). Documented at https://code.claude.com/docs/en/memory as a supported per-developer override file. |
 | **Auto Memory** | Automatic | Session | Auto-captured insights and corrections |
 
 > **Scope**: `Organization` = managed by admins, `Project` = shared with team via git, `User` = personal preferences, `Local` = not committed, `Session` = auto-managed
@@ -438,7 +438,7 @@ cp 02-memory/personal-CLAUDE.md ~/.claude/CLAUDE.md
 
 ---
 
-## New Features (April 2026)
+## New Features (May 2026)
 
 | Feature | Description | How to Use |
 |---------|-------------|------------|
@@ -530,8 +530,8 @@ chmod +x ~/.claude/hooks/*.sh
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/commands
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77e6235..2f517fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,75 @@
 # Changelog
 
+## [v2.1.131] — 2026-05-06
+
+### Synced to Claude Code v2.1.131
+
+Bumps tutorial coverage from Claude Code v2.1.126 → v2.1.131 (May 6, 2026
+release). Anthropic shipped v2.1.128, v2.1.129, and v2.1.131 since the last
+sync; v2.1.127 and v2.1.130 were skipped and never released publicly.
+
+### Added (English docs)
+
+- `--plugin-url <url>` flag (v2.1.129) — fetches a plugin `.zip` archive from
+  a URL for the current session. Repeatable. Documented in
+  `07-plugins/README.md`.
+- `CLAUDE_CODE_FORCE_SYNC_OUTPUT` env var (v2.1.129) — forces synchronous
+  output for terminals where auto-detection misses (e.g., Emacs `eat`).
+  Documented in `10-cli/README.md` and `09-advanced-features/README.md`.
+- `CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE` env var (v2.1.129) — enables
+  background upgrades for Homebrew/WinGet installs (which normally do not
+  auto-update). Documented in `10-cli/README.md` and
+  `09-advanced-features/README.md`.
+- `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY` env var (v2.1.129) — required
+  to opt in to `/v1/models` gateway discovery (see Changed). Documented in
+  `10-cli/README.md`.
+- `disableRemoteControl` setting (v2.1.128) — admins can block
+  `claude remote-control` and `/remote-control` via managed/policy scope.
+  Documented in `09-advanced-features/README.md`.
+- `--plugin-dir` accepts `.zip` archives (v2.1.128) — alongside directory
+  inputs. Documented in `07-plugins/README.md`.
+- `skillOverrides` accepts `"name-only"` and `"user-invocable-only"`
+  (v2.1.129) — in addition to the previous `"on"`/`"off"`. Documented in
+  `03-skills/README.md`.
+
+### Changed
+
+- **Behavior change**: Gateway `/v1/models` discovery is now **opt-in**
+  (v2.1.129). Previously (v2.1.126), setting `ANTHROPIC_BASE_URL` automatically
+  populated `/model` from the gateway's `/v1/models` endpoint. From v2.1.129,
+  users must additionally set `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY=1`;
+  without the env var, `/model` falls back to the built-in static list.
+  Documented in `10-cli/README.md`.
+- `/mcp` shows tool count per server and visually flags servers reporting 0
+  tools (v2.1.128). Documented in `05-mcp/README.md`.
+- Bare `/color` (no args) picks a random session color (v2.1.128); explicit
+  `/color <name|hex>` continues to set a specific color. Documented in
+  `01-slash-commands/README.md`.
+- `--channels` flag now works with API-key (console) authentication
+  (v2.1.128). Earlier releases required Pro/Max OAuth. Documented in
+  `09-advanced-features/README.md`.
+- Ctrl+R history picker defaults to **all prompts across all projects**
+  (v2.1.129). Press Ctrl+S inside the picker to narrow scope to the current
+  project. Documented in `09-advanced-features/README.md`.
+- `/context` no longer dumps its ASCII visualization into the conversation
+  (v2.1.129). The viz is shown in-UI only; no more ~1.6k token cost per
+  invocation. Documented in `09-advanced-features/README.md`.
+- Oversized images in drag-and-drop are auto-downscaled (v2.1.128) — earlier
+  versions rejected images outright.
+
+### Fixed
+
+- VS Code extension activation on Windows (v2.1.131).
+- Mantle endpoint authentication (v2.1.131).
+- 1-hour prompt-cache TTL no longer truncated to 5 minutes (v2.1.129).
+- Crash on stdin payloads larger than 10 MB (v2.1.128).
+
+### Notes for translation maintainers
+
+The `vi/`, `zh/`, `uk/`, and `ja/` localized trees are community-maintained
+and may lag the English source. Contributors syncing translations should diff
+against the English files updated in this release.
+
 ## [v2.1.126] — 2026-05-02
 
 ### Synced to Claude Code v2.1.126
diff --git a/INDEX.md b/INDEX.md
index 82aedb3..2d4373b 100644
--- a/INDEX.md
+++ b/INDEX.md
@@ -874,13 +874,13 @@ Want to add more examples? Follow the structure:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/hooks
 - https://code.claude.com/docs/en/commands
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
 **Total Examples**: 100+ files
 **Categories**: 10 features
diff --git a/LEARNING-ROADMAP.md b/LEARNING-ROADMAP.md
index 51cb3fe..2ac6c21 100644
--- a/LEARNING-ROADMAP.md
+++ b/LEARNING-ROADMAP.md
@@ -97,7 +97,7 @@ graph TD
 
 | Step | Feature | Complexity | Time | Level | Dependencies | Why Learn This | Key Benefits |
 |------|---------|-----------|------|-------|--------------|----------------|--------------|
-| **1** | [Slash Commands](01-slash-commands/) | ⭐ Beginner | 30 min | Level 1 | None | Quick productivity wins (55+ built-in + 5 bundled skills) | Instant automation, team standards |
+| **1** | [Slash Commands](01-slash-commands/) | ⭐ Beginner | 30 min | Level 1 | None | Quick productivity wins (60+ built-in + 5 bundled skills) | Instant automation, team standards |
 | **2** | [Memory](02-memory/) | ⭐⭐ Beginner+ | 45 min | Level 1 | None | Essential for all features | Persistent context, preferences |
 | **3** | [Checkpoints](08-checkpoints/) | ⭐⭐ Intermediate | 45 min | Level 1 | Session management | Safe exploration | Experimentation, recovery |
 | **4** | [CLI Basics](10-cli/) | ⭐⭐ Beginner+ | 30 min | Level 1 | None | Core CLI usage | Interactive & print mode |
@@ -738,12 +738,12 @@ Once you've completed all milestones:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/hooks
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
 **Maintained by**: Claude How-To Contributors
 **License**: Educational purposes, free to use and adapt
diff --git a/QUICK_REFERENCE.md b/QUICK_REFERENCE.md
index 5960258..e7fb257 100644
--- a/QUICK_REFERENCE.md
+++ b/QUICK_REFERENCE.md
@@ -113,7 +113,7 @@ claude -r "session"    # Resume session by name/ID
 
 | Feature | Install Path | Usage |
 |---------|-------------|-------|
-| **Slash Commands (55+)** | `.claude/commands/*.md` | `/command-name` |
+| **Slash Commands (60+)** | `.claude/commands/*.md` | `/command-name` |
 | **Memory** | `./CLAUDE.md` | Auto-loaded |
 | **Skills** | `.claude/skills/*/SKILL.md` | Auto-invoked |
 | **Subagents** | `.claude/agents/*.md` | Auto-delegated |
@@ -439,7 +439,7 @@ echo $GITHUB_TOKEN
 
 | Need | Use This | Example |
 |------|----------|---------|
-| Quick shortcut | Slash Command (55+) | `01-slash-commands/optimize.md` |
+| Quick shortcut | Slash Command (60+) | `01-slash-commands/optimize.md` |
 | Team standards | Memory | `02-memory/project-CLAUDE.md` |
 | Auto workflow | Skill | `03-skills/code-review/` |
 | Specialized task | Subagent | `04-subagents/code-reviewer.md` |
@@ -457,7 +457,6 @@ echo $GITHUB_TOKEN
 
 - **Main Guide**: `README.md`
 - **Complete Index**: `INDEX.md`
-- **Summary**: `EXAMPLES_SUMMARY.md`
 - **Original Guide**: `claude_concepts_guide.md`
 
 ---
@@ -505,11 +504,11 @@ Getting started checklist:
 **This Card**: Keep it handy for quick reference!
 
 ---
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/hooks
 - https://code.claude.com/docs/en/commands
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/README.md b/README.md
index 3dd20ca..75aad16 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 [![GitHub Stars](https://img.shields.io/github/stars/luongnv89/claude-howto?style=flat&color=gold)](https://github.com/luongnv89/claude-howto/stargazers)
 [![GitHub Forks](https://img.shields.io/github/forks/luongnv89/claude-howto?style=flat)](https://github.com/luongnv89/claude-howto/network/members)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
-[![Version](https://img.shields.io/badge/version-2.1.126-brightgreen)](CHANGELOG.md)
+[![Version](https://img.shields.io/badge/version-2.1.131-brightgreen)](CHANGELOG.md)
 [![Claude Code](https://img.shields.io/badge/Claude_Code-2.1+-purple)](https://code.claude.com)
 
 🌐 **Language / Ngôn ngữ / 语言 / Мова:** [English](README.md) | [Tiếng Việt](vi/README.md) | [中文](zh/README.md) | [Українська](uk/README.md) | [日本語](ja/README.md)
@@ -102,7 +102,7 @@ Run `/lesson-quiz [topic]` after each module. The quiz pinpoints what you missed
 
 - **GitHub stars** from developers who use Claude Code daily
 - **Forks** from teams adapting this guide for their own workflows
-- **Actively maintained** — synced with every Claude Code release (latest: v2.1.126, May 2026)
+- **Actively maintained** — synced with every Claude Code release (latest: v2.1.131, May 2026)
 - **Community-driven** — contributions from developers who share their real-world configurations
 
 [![Star History Chart](https://api.star-history.com/svg?repos=luongnv89/claude-howto&type=Date)](https://star-history.com/#luongnv89/claude-howto&Date)
@@ -201,7 +201,7 @@ cp -r 03-skills/code-review ~/.claude/skills/
 Yes. MIT licensed, free forever. Use it in personal projects, at work, in your team — no restrictions beyond including the license notice.
 
 **Is this maintained?**
-Actively. The guide is synced with every Claude Code release. Current version: v2.1.126 (May 2026), compatible with Claude Code 2.1+.
+Actively. The guide is synced with every Claude Code release. Current version: v2.1.131 (May 2026), compatible with Claude Code 2.1+.
 
 **How is this different from the official docs?**
 The official docs are a feature reference. This guide is a tutorial with diagrams, production-ready templates, and a progressive learning path. They complement each other — start here to learn, reference the docs when you need specifics.
@@ -871,11 +871,11 @@ MIT License - see [LICENSE](LICENSE). Free to use, modify, and distribute. The o
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/changelog
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.113
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5
diff --git a/STYLE_GUIDE.md b/STYLE_GUIDE.md
index 0e2122b..c5c5e6f 100644
--- a/STYLE_GUIDE.md
+++ b/STYLE_GUIDE.md
@@ -631,8 +631,8 @@ Before submitting content, verify:
 
 ---
 
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/changelog
diff --git a/claude_concepts_guide.md b/claude_concepts_guide.md
index 8520f82..c177ac4 100644
--- a/claude_concepts_guide.md
+++ b/claude_concepts_guide.md
@@ -3145,8 +3145,8 @@ Claude Code supports three models with adaptive reasoning effort:
 *Now includes: Hooks, Checkpoints, Planning Mode, Extended Thinking, Background Tasks, Permission Modes (6 modes), Headless Mode, Session Management, Auto Memory, Agent Teams, Scheduled Tasks, Chrome Integration, Channels, Voice Dictation, and Bundled Skills*
 
 ---
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/hooks
diff --git a/resources.md b/resources.md
index 602c90b..5cce024 100644
--- a/resources.md
+++ b/resources.md
@@ -249,10 +249,10 @@ These steps capture the core recommendations for smooth workflows with Claude Co
 | **Monitor Tool** | Watch a background command's stdout stream and react to events instead of polling (v2.1.98+) | [Advanced Features](09-advanced-features/) |
 
 ---
-**Last Updated**: May 2, 2026
-**Claude Code Version**: 2.1.126
+**Last Updated**: May 6, 2026
+**Claude Code Version**: 2.1.131
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/changelog
-- https://github.com/anthropics/claude-code/releases/tag/v2.1.126
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5