fix: Address GitHub issues #511, #517, #527, #531 (#542)

* feat(docs): Add analysis reports for issues #514, #517, #520, #527, and #532

- Issue #514: Documented analysis of orphaned observer session files, including root cause, evidence, and recommended fixes.
- Issue #517: Analyzed PowerShell escaping issues in cleanupOrphanedProcesses() on Windows, with recommended fixes using WMIC.
- Issue #520: Confirmed resolution of stuck messages issue through architectural changes to a claim-and-delete pattern.
- Issue #527: Identified detection failure of uv on Apple Silicon Macs with Homebrew installation, proposed path updates for detection.
- Issue #532: Analyzed memory leak issues in SessionManager, detailing session cleanup and conversationHistory growth concerns, with recommended fixes.

* fix: address GitHub issues #511, #517, #527, #531

- #511: Add gemini-3-flash model to GeminiAgent (type, RPM limits, validation)
- #517: Replace PowerShell with WMIC for Windows process management (fixes Git Bash/WSL)
- #527: Add Apple Silicon Homebrew paths for bun and uv detection
- #531: Remove duplicate type definitions from export-memories.ts using bridge file

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

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

* feat(docs): Add detailed reports for issues #511 and #531 addressing model validation and type duplication

* test: add regression tests for PR #542 fixes

Adds comprehensive regression tests for all 4 issues addressed in PR #542:

- #511: Add gemini-3-flash model tests to verify model acceptance and rate limiting
- #517: Add WMIC parsing tests for Windows process enumeration (23 tests)
- #527: Add Apple Silicon Homebrew path tests for bun/uv detection (18 tests)
- #531: Add export types tests to validate type interfaces (12 tests)

Total: 53 new tests, all passing. Addresses PR review feedback requesting test coverage.

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

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

---------

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

scripts/export-memories.ts

@@ -9,80 +9,13 @@ import { writeFileSync } from 'fs';
 import { homedir } from 'os';
 import { join } from 'path';
 import { SettingsDefaultsManager } from '../src/shared/SettingsDefaultsManager';
-
-interface ObservationRecord {
-  id: number;
-  memory_session_id: string;
-  project: string;
-  text: string | null;
-  type: string;
-  title: string;
-  subtitle: string | null;
-  facts: string | null;
-  narrative: string | null;
-  concepts: string | null;
-  files_read: string | null;
-  files_modified: string | null;
-  prompt_number: number;
-  discovery_tokens: number | null;
-  created_at: string;
-  created_at_epoch: number;
-}
-
-interface SdkSessionRecord {
-  id: number;
-  content_session_id: string;
-  memory_session_id: string;
-  project: string;
-  user_prompt: string;
-  started_at: string;
-  started_at_epoch: number;
-  completed_at: string | null;
-  completed_at_epoch: number | null;
-  status: string;
-}
-
-interface SessionSummaryRecord {
-  id: number;
-  memory_session_id: string;
-  project: string;
-  request: string | null;
-  investigated: string | null;
-  learned: string | null;
-  completed: string | null;
-  next_steps: string | null;
-  files_read: string | null;
-  files_edited: string | null;
-  notes: string | null;
-  prompt_number: number;
-  discovery_tokens: number | null;
-  created_at: string;
-  created_at_epoch: number;
-}
-
-interface UserPromptRecord {
-  id: number;
-  content_session_id: string;
-  prompt_number: number;
-  prompt_text: string;
-  created_at: string;
-  created_at_epoch: number;
-}
-
-interface ExportData {
-  exportedAt: string;
-  exportedAtEpoch: number;
-  query: string;
-  project?: string;
-  totalObservations: number;
-  totalSessions: number;
-  totalSummaries: number;
-  totalPrompts: number;
-  observations: ObservationRecord[];
-  sessions: SdkSessionRecord[];
-  summaries: SessionSummaryRecord[];
-  prompts: UserPromptRecord[];
-}
+import type {
+  ObservationRecord,
+  SdkSessionRecord,
+  SessionSummaryRecord,
+  UserPromptRecord,
+  ExportData
+} from './types/export.js';
 
 async function exportMemories(query: string, outputFile: string, project?: string) {
   try {