feat: Mode system with inheritance and multilingual support (#412)

* feat: add domain management system with support for multiple domain profiles

- Introduced DomainManager class for loading and managing domain profiles.
- Added support for a default domain ('code') and fallback mechanisms.
- Implemented domain configuration validation and error handling.
- Created types for domain configuration, observation types, and concepts.
- Added new directory for domain profiles and ensured its existence.
- Updated SettingsDefaultsManager to include CLAUDE_MEM_DOMAIN setting.

* Refactor domain management to mode management

- Removed DomainManager class and replaced it with ModeManager for better clarity and functionality.
- Updated types from DomainConfig to ModeConfig and DomainPrompts to ModePrompts.
- Changed references from domains to modes in the settings and paths.
- Ensured backward compatibility by maintaining the fallback mechanism to the 'code' mode.

* feat: add migration 008 to support mode-agnostic observations and refactor service layer references in documentation

* feat: add new modes for code development and email investigation with detailed observation types and concepts

* Refactor observation parsing and prompt generation to incorporate mode-specific configurations

- Updated `parseObservations` function to use 'observation' as a universal fallback type instead of 'change', utilizing active mode's valid observation types.
- Modified `buildInitPrompt` and `buildContinuationPrompt` functions to accept a `ModeConfig` parameter, allowing for dynamic prompt content based on the active mode.
- Enhanced `ModePrompts` interface to include additional guidance for observers, such as recording focus and skip guidance.
- Adjusted the SDKAgent to load the active mode and pass it to prompt generation functions, ensuring prompts are tailored to the current mode's context.

* fix: correct mode prompt injection to preserve exact wording and type list visibility

- Add script to extract prompts from main branch prompts.ts into code.yaml
- Fix prompts.ts to show type list in XML template (e.g., "[ bugfix | feature | ... ]")
- Keep 'change' as fallback type in parser.ts (maintain backwards compatibility)
- Regenerate code.yaml with exact wording from original hardcoded prompts
- Build succeeds with no TypeScript errors

* fix: update ModeManager to load JSON mode files and improve validation

- Changed ModeManager to load mode configurations from JSON files instead of YAML.
- Removed the requirement for an "observation" type and updated validation to require at least one observation type.
- Updated fallback behavior in the parser to use the first type from the active mode's type list.
- Added comprehensive tests for mode loading, prompt injection, and parser integration, ensuring correct behavior across different modes.
- Introduced new mode JSON files for "Code Development" and "Email Investigation" with detailed observation types and prompts.

* Add mode configuration loading and update licensing information for Ragtime

- Implemented loading of mode configuration in WorkerService before database initialization.
- Added PolyForm Noncommercial License 1.0.0 to Ragtime directory.
- Created README.md for Ragtime with licensing details and usage guidelines.

* fix: add datasets directory to .gitignore to prevent accidental commits

* refactor: remove unused plugin package.json file

* chore: add package.json for claude-mem plugin with version 7.4.5

* refactor: remove outdated tests and improve error handling

- Deleted tests for ChromaSync error handling, smart install, strip memory tags, and user prompt tag stripping due to redundancy or outdated logic.
- Removed vitest configuration as it is no longer needed.
- Added a comprehensive implementation plan for fixing the modes system, addressing critical issues and improving functionality.
- Created a detailed test analysis report highlighting the quality and effectiveness of the current test suite, identifying areas for improvement.
- Introduced a new plugin package.json for runtime dependencies related to claude-mem hooks.

* refactor: remove parser regression tests to streamline codebase

* docs: update CLAUDE.md to clarify test management and changelog generation

* refactor: remove migration008 for mode-agnostic observations

* Refactor observation type handling to use ModeManager for icons and emojis

- Removed direct mappings of observation types to icons and work emojis in context-generator, FormattingService, SearchManager, and TimelineService.
- Integrated ModeManager to dynamically retrieve icons and emojis based on the active mode.
- Improved maintainability by centralizing the logic for observation type representation.

* Refactor observation metadata constants and update context generator

- Removed the explicit declaration of OBSERVATION_TYPES and OBSERVATION_CONCEPTS from observation-metadata.ts.
- Introduced fallback default strings for DEFAULT_OBSERVATION_TYPES_STRING and DEFAULT_OBSERVATION_CONCEPTS_STRING.
- Updated context-generator.ts to utilize observation types and concepts from ModeManager instead of constants.

* refactor: remove intermediate error handling from hooks (Phase 1)

Apply "fail fast" error handling strategy - errors propagate and crash loud
instead of being caught, wrapped, and re-thrown at intermediate layers.

Changes:
- Remove try/catch around fetch calls in all hooks - let errors throw
- Add try/catch ONLY around JSON.parse at entry points
- Delete error-handler.ts and hook-error-handler.ts (no longer needed)
- Update worker-utils.ts: functions now throw instead of returning null
- Update transcript-parser.ts: throw on missing path, empty file, malformed JSON
- Remove all handleWorkerError, handleFetchError imports

Philosophy: If something breaks, we KNOW it broke. No silent failures.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: remove intermediate error handling from worker service (Phase 2)

Apply "fail fast" error handling strategy to worker service layer.

Changes:
- worker-service.ts: Remove try/catch from version endpoint, cleanup,
  MCP close, process enumeration, force kill, and isAlive check
- SessionRoutes.ts: Remove try/catch from JSON.stringify calls, remove
  .catch() from Chroma sync and SDK agent calls
- SettingsRoutes.ts: Remove try/catch from toggleMcp()
- DatabaseManager.ts: Remove .catch() from backfill and close operations
- SDKAgent.ts: Keep outer try/catch (top-level), remove .catch() from
  Chroma sync operations
- SSEBroadcaster.ts: Remove try/catch from broadcast and sendToClient

Philosophy: Errors propagate and crash loud. BaseRouteHandler.wrapHandler
provides top-level catching for HTTP routes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: remove error swallowing from SQLite services (Phase 3)

Apply "fail fast" error handling strategy to database layer.

SessionStore.ts migrations:
- ensureWorkerPortColumn(): Remove outer try/catch, let it throw
- ensurePromptTrackingColumns(): Remove outer try/catch, let it throw
- removeSessionSummariesUniqueConstraint(): Keep inner transaction
  rollback, remove outer catch
- addObservationHierarchicalFields(): Remove outer try/catch
- makeObservationsTextNullable(): Keep inner transaction rollback,
  remove outer catch
- createUserPromptsTable(): Keep inner transaction rollback, remove
  outer catch
- getFilesForSession(): Remove try/catch around JSON.parse

SessionSearch.ts:
- ensureFTSTables(): Remove try/catch, let it throw

Philosophy: Migration errors that are swallowed mean we think the
database is fine when it's not. Keep only inner transaction rollback
try/catch blocks.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: remove error hiding from utilities (Phase 4)

Apply "fail fast" error handling strategy to utility layer.

logger.ts:
- formatTool(): Remove try/catch, let JSON.parse throw on malformed input

context-generator.ts:
- loadContextConfig(): Remove try/catch, let parseInt throw on invalid settings
- Transcript extraction: Remove try/catch, let file read errors propagate

ChromaSync.ts:
- close(): Remove nested try/catch blocks, let close errors propagate

Philosophy: No silent fallbacks or hidden defaults. If something breaks,
we know it broke immediately.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* feat: serve static UI assets and update package root path

- Added middleware to serve static UI assets (JS, CSS, fonts, etc.) in ViewerRoutes.
- Updated getPackageRoot function to correctly return the package root directory as one level up from the current directory.

* feat: Enhance mode loading with inheritance support

- Introduced parseInheritance method to handle parent--override mode IDs.
- Added deepMerge method for recursively merging mode configurations.
- Updated loadMode method to support inheritance, loading parent modes and applying overrides.
- Improved error handling for missing mode files and logging for better traceability.

* fix(modes): correct inheritance file resolution and path handling

* Refactor code structure for improved readability and maintainability

* feat: Add mode configuration documentation and examples

* fix: Improve concurrency handling in translateReadme function

* Refactor SDK prompts to enhance clarity and structure

- Updated the `buildInitPrompt` and `buildContinuationPrompt` functions in `prompts.ts` to improve the organization of prompt components, including the addition of language instructions and footer messages.
- Removed redundant instructions and emphasized the importance of recording observations.
- Modified the `ModePrompts` interface in `types.ts` to include new properties for system identity, language instructions, and output format header, ensuring better flexibility and clarity in prompt generation.

* Enhance prompts with language instructions and XML formatting

- Updated `buildInitPrompt`, `buildSummaryPrompt`, and `buildContinuationPrompt` functions to include detailed language instructions in XML comments.
- Ensured that language instructions guide users to keep XML tags in English while writing content in the specified language.
- Modified the `buildSummaryPrompt` function to accept `mode` as a parameter for consistency.
- Adjusted the call to `buildSummaryPrompt` in `SDKAgent` to pass the `mode` argument.

* Refactor XML prompt generation in SDK

- Updated the buildInitPrompt, buildSummaryPrompt, and buildContinuationPrompt functions to use new placeholders for XML elements, improving maintainability and readability.
- Removed redundant language instructions in comments for clarity.
- Added new properties to ModePrompts interface for better structure and organization of XML placeholders and section headers.

* feat: Update observation prompts and structure across multiple languages

* chore: Remove planning docs and update Ragtime README

Remove ephemeral development artifacts:
- .claude/plans/modes-system-fixes.md
- .claude/test-analysis-report.md
- PROMPT_INJECTION_ANALYSIS.md

Update ragtime/README.md to explain:
- Feature is not yet implemented
- Dependency on modes system (now complete in PR #412)
- Ready to be scripted out in future release

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* fix: Move summary prompts to mode files for multilingual support

Summary prompts were hardcoded in English in prompts.ts, breaking
multilingual support. Now properly mode-based:

- Added summary_instruction, summary_context_label,
  summary_format_instruction, summary_footer to code.json
- Updated buildSummaryPrompt() to use mode fields instead of hardcoded text
- Added summary_footer with language instructions to all 10 language modes
- Language modes keep English prompts + language requirement footer

This fixes the gaslighting where we claimed full multilingual support
but summaries were still generated in English.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* chore: Clean up README by removing local preview instructions and streamlining beta features section

* Add translated README files for Ukrainian, Vietnamese, and Chinese languages

* Add new language modes for code development in multiple languages

- Introduced JSON configurations for Code Development in Greek, Finnish, Hebrew, Hindi, Hungarian, Indonesian, Italian, Dutch, Norwegian, Polish, Brazilian Portuguese, Romanian, Swedish, Turkish, and Ukrainian.
- Each configuration includes prompts for observations, summaries, and instructions tailored to the respective language.
- Ensured that all prompts emphasize the importance of generating observations without referencing the agent's actions.

* Add multilingual support links to README files in various languages

- Updated README.id.md, README.it.md, README.ja.md, README.ko.md, README.nl.md, README.no.md, README.pl.md, README.pt-br.md, README.ro.md, README.ru.md, README.sv.md, README.th.md, README.tr.md, README.uk.md, README.vi.md, and README.zh.md to include links to other language versions.
- Each README now features a centered paragraph with flags and links for easy navigation between different language documents.

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/services/context-generator.ts

@@ -9,12 +9,6 @@ import path from 'path';
 import { homedir } from 'os';
 import { existsSync, readFileSync, unlinkSync } from 'fs';
 import { SessionStore } from './sqlite/SessionStore.js';
-import {
-  OBSERVATION_TYPES,
-  OBSERVATION_CONCEPTS,
-  TYPE_ICON_MAP,
-  TYPE_WORK_EMOJI_MAP
-} from '../constants/observation-metadata.js';
 import { logger } from '../utils/logger.js';
 import { SettingsDefaultsManager } from '../shared/SettingsDefaultsManager.js';
 import {
@@ -26,6 +20,7 @@ import {
   extractFirstFile
 } from '../shared/timeline-formatting.js';
 import { getProjectName } from '../utils/project-name.js';
+import { ModeManager } from './domain/ModeManager.js';
 
 // Version marker path - use homedir-based path that works in both CJS and ESM contexts
 const VERSION_MARKER_PATH = path.join(homedir(), '.claude', 'plugins', 'marketplaces', 'thedotmack', 'plugin', '.install-version');
@@ -60,43 +55,24 @@ function loadContextConfig(): ContextConfig {
   const settingsPath = path.join(homedir(), '.claude-mem', 'settings.json');
   const settings = SettingsDefaultsManager.loadFromFile(settingsPath);
 
-  try {
-    return {
-      totalObservationCount: parseInt(settings.CLAUDE_MEM_CONTEXT_OBSERVATIONS, 10),
-      fullObservationCount: parseInt(settings.CLAUDE_MEM_CONTEXT_FULL_COUNT, 10),
-      sessionCount: parseInt(settings.CLAUDE_MEM_CONTEXT_SESSION_COUNT, 10),
-      showReadTokens: settings.CLAUDE_MEM_CONTEXT_SHOW_READ_TOKENS === 'true',
-      showWorkTokens: settings.CLAUDE_MEM_CONTEXT_SHOW_WORK_TOKENS === 'true',
-      showSavingsAmount: settings.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_AMOUNT === 'true',
-      showSavingsPercent: settings.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_PERCENT === 'true',
-      observationTypes: new Set(
-        settings.CLAUDE_MEM_CONTEXT_OBSERVATION_TYPES.split(',').map((t: string) => t.trim()).filter(Boolean)
-      ),
-      observationConcepts: new Set(
-        settings.CLAUDE_MEM_CONTEXT_OBSERVATION_CONCEPTS.split(',').map((c: string) => c.trim()).filter(Boolean)
-      ),
-      fullObservationField: settings.CLAUDE_MEM_CONTEXT_FULL_FIELD as 'narrative' | 'facts',
-      showLastSummary: settings.CLAUDE_MEM_CONTEXT_SHOW_LAST_SUMMARY === 'true',
-      showLastMessage: settings.CLAUDE_MEM_CONTEXT_SHOW_LAST_MESSAGE === 'true',
-    };
-  } catch (error) {
-    logger.warn('WORKER', 'Failed to load context settings, using defaults', {}, error as Error);
-    // Return defaults on error
-    return {
-      totalObservationCount: 50,
-      fullObservationCount: 5,
-      sessionCount: 10,
-      showReadTokens: true,
-      showWorkTokens: true,
-      showSavingsAmount: true,
-      showSavingsPercent: true,
-      observationTypes: new Set(OBSERVATION_TYPES),
-      observationConcepts: new Set(OBSERVATION_CONCEPTS),
-      fullObservationField: 'narrative' as const,
-      showLastSummary: true,
-      showLastMessage: false,
-    };
-  }
+  return {
+    totalObservationCount: parseInt(settings.CLAUDE_MEM_CONTEXT_OBSERVATIONS, 10),
+    fullObservationCount: parseInt(settings.CLAUDE_MEM_CONTEXT_FULL_COUNT, 10),
+    sessionCount: parseInt(settings.CLAUDE_MEM_CONTEXT_SESSION_COUNT, 10),
+    showReadTokens: settings.CLAUDE_MEM_CONTEXT_SHOW_READ_TOKENS === 'true',
+    showWorkTokens: settings.CLAUDE_MEM_CONTEXT_SHOW_WORK_TOKENS === 'true',
+    showSavingsAmount: settings.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_AMOUNT === 'true',
+    showSavingsPercent: settings.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_PERCENT === 'true',
+    observationTypes: new Set(
+      settings.CLAUDE_MEM_CONTEXT_OBSERVATION_TYPES.split(',').map((t: string) => t.trim()).filter(Boolean)
+    ),
+    observationConcepts: new Set(
+      settings.CLAUDE_MEM_CONTEXT_OBSERVATION_CONCEPTS.split(',').map((c: string) => c.trim()).filter(Boolean)
+    ),
+    fullObservationField: settings.CLAUDE_MEM_CONTEXT_FULL_FIELD as 'narrative' | 'facts',
+    showLastSummary: settings.CLAUDE_MEM_CONTEXT_SHOW_LAST_SUMMARY === 'true',
+    showLastMessage: settings.CLAUDE_MEM_CONTEXT_SHOW_LAST_MESSAGE === 'true',
+  };
 }
 
 // Configuration constants
@@ -280,20 +256,16 @@ export async function generateContext(input?: ContextInput, useColors: boolean =
   let priorAssistantMessage = '';
 
   if (config.showLastMessage && observations.length > 0) {
-    try {
-      const currentSessionId = input?.session_id;
-      const priorSessionObs = observations.find(obs => obs.sdk_session_id !== currentSessionId);
+    const currentSessionId = input?.session_id;
+    const priorSessionObs = observations.find(obs => obs.sdk_session_id !== currentSessionId);
 
-      if (priorSessionObs) {
-        const priorSessionId = priorSessionObs.sdk_session_id;
-        const dashedCwd = cwdToDashed(cwd);
-        const transcriptPath = path.join(homedir(), '.claude', 'projects', dashedCwd, `${priorSessionId}.jsonl`);
-        const messages = extractPriorMessages(transcriptPath);
-        priorUserMessage = messages.userMessage;
-        priorAssistantMessage = messages.assistantMessage;
-      }
-    } catch (error) {
-      // Expected: Transcript file may not exist or be readable
+    if (priorSessionObs) {
+      const priorSessionId = priorSessionObs.sdk_session_id;
+      const dashedCwd = cwdToDashed(cwd);
+      const transcriptPath = path.join(homedir(), '.claude', 'projects', dashedCwd, `${priorSessionId}.jsonl`);
+      const messages = extractPriorMessages(transcriptPath);
+      priorUserMessage = messages.userMessage;
+      priorAssistantMessage = messages.assistantMessage;
     }
   }
 
@@ -325,11 +297,13 @@ export async function generateContext(input?: ContextInput, useColors: boolean =
 
   // Chronological Timeline
   if (timelineObs.length > 0) {
-    // Legend
+    // Legend - generate dynamically from active mode
+    const mode = ModeManager.getInstance().getActiveMode();
+    const typeLegendItems = mode.observation_types.map(t => `${t.emoji} ${t.id}`).join(' | ');
     if (useColors) {
-      output.push(`${colors.dim}Legend: 🎯 session-request | 🔴 bugfix | 🟣 feature | 🔄 refactor | ✅ change | 🔵 discovery | ⚖️  decision${colors.reset}`);
+      output.push(`${colors.dim}Legend: 🎯 session-request | ${typeLegendItems}${colors.reset}`);
     } else {
-      output.push(`**Legend:** 🎯 session-request | 🔴 bugfix | 🟣 feature | 🔄 refactor | ✅ change | 🔵 discovery | ⚖️  decision`);
+      output.push(`**Legend:** 🎯 session-request | ${typeLegendItems}`);
     }
     output.push('');
 
@@ -536,7 +510,7 @@ export async function generateContext(input?: ContextInput, useColors: boolean =
 
           const time = formatTime(obs.created_at);
           const title = obs.title || 'Untitled';
-          const icon = TYPE_ICON_MAP[obs.type as keyof typeof TYPE_ICON_MAP] || '•';
+          const icon = ModeManager.getInstance().getTypeIcon(obs.type);
 
           const obsSize = (obs.title?.length || 0) +
                           (obs.subtitle?.length || 0) +
@@ -544,7 +518,7 @@ export async function generateContext(input?: ContextInput, useColors: boolean =
                           JSON.stringify(obs.facts || []).length;
           const readTokens = Math.ceil(obsSize / CHARS_PER_TOKEN_ESTIMATE);
           const discoveryTokens = obs.discovery_tokens || 0;
-          const workEmoji = TYPE_WORK_EMOJI_MAP[obs.type as keyof typeof TYPE_WORK_EMOJI_MAP] || '🔍';
+          const workEmoji = ModeManager.getInstance().getWorkEmoji(obs.type);
           const discoveryDisplay = discoveryTokens > 0 ? `${workEmoji} ${discoveryTokens.toLocaleString()}` : '-';
 
           const showTime = time !== lastTime;