docs: update settings display, CHANGELOG, and README for v2.1.0 features

Author: zebbern

CHANGELOG.md

@@ -5,6 +5,36 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.1.0] - 2025-07-17
+
+### Added
+- **Fast Mode** (`/fast`): Toggle Opus 4.6 speed-optimized API config (2.5x faster, same quality)
+- **AskUserQuestion Handler**: Claude can now ask clarifying questions mid-session via Discord buttons
+- **Startup Buttons**: Quick-action buttons on the startup embed (Status, Sessions, Help, Shutdown)
+- **MCP Mid-Session Management** (`/mcp toggle`, `/mcp reconnect`): Enable/disable or reconnect MCP servers without restarting
+- **Granular Sandbox Config**: Full SDK SandboxSettings support (network rules, filesystem ACLs, excluded commands, violation ignoring)
+- **Additional Directories**: Multi-repo access via `additionalDirectories` setting
+- **Fork Session**: Branch conversations into new sessions via `forkSession` option
+- **Hooks System**: Passive SDK callbacks for tool use, notification, and task completion observability
+- **stopTask()**: Stop background tasks mid-session via `/claude-control action:stop-task`
+- **Agent Teams**: `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1` env var support with `delegate` permission mode
+- **stop_reason Display**: Shows why Claude stopped (end_turn, max_tokens, stop_sequence) in completion embeds
+- **Tasks Env Var**: `CLAUDE_CODE_ENABLE_TASKS=1` automatically set for background task support
+- **Known Issues Documentation**: `docs/known-issues.md` documenting 22 accepted risks
+
+### Changed
+- `/continue` renamed to `/resume` for clarity
+- Button UX overhaul: consistent styling, proper disabled states, contextual labels
+- Settings display now shows SDK features (hooks, agent teams, sandbox config, additional dirs)
+- Help system updated with all new command documentation
+
+### Fixed
+- Getter pattern for `claudeController` prevents stale abort controller references
+- Abort state checks prevent sending to cancelled sessions
+- Continue button properly resumes the last session
+- Pagination titles show correct page info
+- Unicode-safe message splitting prevents mid-codepoint truncation
+
 ## [2.0.0] - 2026-02-18
 
 ### Breaking Changes

README.md

@@ -12,8 +12,13 @@
 | Full SDK Integration | Built on `@anthropic-ai/claude-agent-sdk` v0.2.45 with native agent support | ✅ |
 | Centralized collaboration | Run commands and discuss results where your team already communicates | ✅ |
 | Branch-aware organization | Maps Git branches to channels/categories so feature work stays separated | ✅ |
-| Mid-session controls | Interrupt, change model, change permissions, and rewind without restarting | ✅ |
+| Mid-session controls | Interrupt, change model, change permissions, stop tasks, and rewind without restarting | ✅ |
+| Fast mode | Toggle Opus 4.6 speed-optimized API (2.5x faster, same quality) via `/fast` | ✅ |
 | 7 Specialized AI Agents | Code reviewer, architect, debugger, security analyst, performance engineer, DevOps, general | ✅ |
+| MCP server management | View status, toggle, and reconnect MCP servers mid-session | ✅ |
+| Hooks system | Passive SDK callbacks for tool use, notification, and task completion observability | ✅ |
+| Granular sandbox config | Full SDK sandbox with network rules, filesystem ACLs, and excluded commands | ✅ |
+| AskUserQuestion | Claude can ask clarifying questions mid-session via Discord buttons | ✅ |
 | Dynamic model discovery | Auto-fetches available models from Anthropic API and CLI | ✅ |
 | Structured output mode | Get JSON responses matching a configurable schema | ✅ |
 | Advanced thinking modes | Standard, think, think-hard, ultrathink with configurable effort and budget | ✅ |

settings/unified-handlers.ts

@@ -381,6 +381,16 @@ async function showAllSettings(ctx: any, settings: UnifiedBotSettings) {
       name: '🔧 Developer Settings',
       value: `Debug: ${settings.enableDebugMode ? 'On' : 'Off'}\nVerbose Errors: ${settings.verboseErrorReporting ? 'On' : 'Off'}\nMetrics: ${settings.enablePerformanceMetrics ? 'On' : 'Off'}`,
       inline: true
+    },
+    {
+      name: '🔌 SDK Features',
+      value: `Agent Teams: ${settings.enableAgentTeams ? '✅' : '❌'}\nSandbox: ${settings.sandboxConfig ? '✅ Custom' : settings.enableSandbox ? '✅ Basic' : '❌'}\nAdditional Dirs: ${settings.additionalDirectories.length > 0 ? settings.additionalDirectories.join(', ') : 'None'}\n1M Context: ${settings.enable1MContext ? '✅' : '❌'}\nCheckpointing: ${settings.enableFileCheckpointing ? '✅' : '❌'}`,
+      inline: true
+    },
+    {
+      name: '🪝 Hooks',
+      value: `Tool Use: ${settings.hooksLogToolUse ? '✅' : '❌'}\nNotifications: ${settings.hooksLogNotifications ? '✅' : '❌'}\nTask Completions: ${settings.hooksLogTaskCompletions ? '✅' : '❌'}`,
+      inline: true
     }
   ];