feat: add SDK exports for consumer app integration

- Create standalone dist/sdk/ module with parseObservations, buildObservationPrompt, parseSummary
- Add package.json exports for 'claude-mem/sdk' and 'claude-mem/modes/*'
- Add TypeScript declarations

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

src/sdk/index.ts

@@ -0,0 +1,2 @@
+export * from './parser.js';
+export * from './prompts.js';

src/services/domain/CLAUDE.md

@@ -3,5 +3,10 @@
 
 <!-- This section is auto-generated by claude-mem. Edit content outside the tags. -->
 
-*No recent activity*
+### Jan 25, 2026
+
+| ID | Time | T | Title | Read |
+|----|------|---|-------|------|
+| #41877 | 12:09 PM | ⚖️ | Deploy Existing Consumer Preview Without Creating New Packages | ~361 |
+| #41873 | 12:03 PM | 🔵 | Claude-mem mode configuration system types documented | ~504 |
 </claude-mem-context>