Add installer, CI, ARM build and test updates

Introduce a one‑line Docker installer and environment examples, add CI and docker validation workflows, and update docs and tests.

Key changes:
- Add docker/install.sh installer that bootstraps /opt/synapsis, downloads compose files, optionally installs Docker, and generates secrets.
- Add top-level .env.example and docker/.env.example entries for shared storage and local development.
- Add GitHub Actions CI (ci.yml) with type checks, targeted vitest runs, build and docker-compose validation.
- Update existing docker workflow to set up QEMU and build multi‑arch images (amd64, arm64).
- Update README and docker/README to use the installer, point to the new repo, adjust local setup instructions, and note shared S3 env vars.
- Update docker-compose comments and include shared S3 env variables and defaults.
- Update .gitignore to ignore site-work mirrors.
- Tests: expand supported bot source types (add brave_news, youtube), increase POST_MAX_LENGTH from 400 to 600, add minimal user handle in mention handler tests, and add mocks & test adjustments in scheduler tests to keep them unit-scoped.

These changes simplify installation, add CI coverage (including Docker config validation), enable multi‑arch builds, and align tests with expanded bot source/validation behavior.

src/lib/bots/contentSource.property.test.ts

@@ -750,11 +750,13 @@ describe('Feature: bot-system, Property 14: Multiple Source Types Per Bot', () =
       );
     });
 
-    it('SUPPORTED_SOURCE_TYPES contains all three types', () => {
+    it('SUPPORTED_SOURCE_TYPES contains the core and extended source types', () => {
       expect(SUPPORTED_SOURCE_TYPES).toContain('rss');
       expect(SUPPORTED_SOURCE_TYPES).toContain('reddit');
       expect(SUPPORTED_SOURCE_TYPES).toContain('news_api');
-      expect(SUPPORTED_SOURCE_TYPES.length).toBe(3);
+      expect(SUPPORTED_SOURCE_TYPES).toContain('brave_news');
+      expect(SUPPORTED_SOURCE_TYPES).toContain('youtube');
+      expect(SUPPORTED_SOURCE_TYPES.length).toBe(5);
     });
   });
 

src/lib/bots/contentSource.test.ts

@@ -433,7 +433,9 @@ describe('Constants', () => {
     expect(SUPPORTED_SOURCE_TYPES).toContain('rss');
     expect(SUPPORTED_SOURCE_TYPES).toContain('reddit');
     expect(SUPPORTED_SOURCE_TYPES).toContain('news_api');
-    expect(SUPPORTED_SOURCE_TYPES.length).toBe(4);
+    expect(SUPPORTED_SOURCE_TYPES).toContain('brave_news');
+    expect(SUPPORTED_SOURCE_TYPES).toContain('youtube');
+    expect(SUPPORTED_SOURCE_TYPES.length).toBe(5);
   });
 
 

src/lib/bots/mentionHandler.property.test.ts

@@ -52,6 +52,9 @@ export const __addBot = (handle: string, userId: string) => {
     id,
     userId,
     handle: handle.toLowerCase(),
+    user: {
+      handle: handle.toLowerCase(),
+    },
     name: `Bot ${handle}`,
     personalityConfig: JSON.stringify({
       systemPrompt: 'Test bot',

src/lib/bots/posting.property.test.ts

@@ -454,7 +454,7 @@ describe('Feature: bot-system, Property 38: Post Content Validation', () => {
 
   it('validation constants are properly defined (Requirement 11.5)', async () => {
     // Verify constants are reasonable
-    expect(POST_MAX_LENGTH).toBe(400);
+    expect(POST_MAX_LENGTH).toBe(600);
     expect(POST_MIN_LENGTH).toBe(1);
     expect(MAX_URLS_PER_POST).toBe(5);
     

src/lib/bots/scheduler.test.ts

@@ -586,6 +586,22 @@ vi.mock('./rateLimiter', () => ({
   canPost: vi.fn(async () => ({ allowed: true })),
 }));
 
+// Mock post creation so scheduler tests stay unit-scoped
+vi.mock('./posting', () => ({
+  triggerPost: vi.fn(async () => ({
+    success: true,
+    post: {
+      id: 'post-1',
+      content: 'Generated post',
+    },
+  })),
+}));
+
+// Mock source fetching to avoid exercising fetcher behavior here
+vi.mock('./contentFetcher', () => ({
+  fetchAllSourcesForBot: vi.fn(async () => undefined),
+}));
+
 import {
   hasUnprocessedContent,
   getNextUnprocessedContent,
@@ -742,7 +758,7 @@ describe('processScheduledPosts', () => {
     expect(result.details[0].status).toBe('skipped_rate_limit');
   });
   
-  it('should skip bots when no content available', async () => {
+  it('should post original content when a bot has no active sources', async () => {
     const { db } = await import('@/db');
     const { canPost } = await import('./rateLimiter');
     
@@ -760,6 +776,32 @@ describe('processScheduledPosts', () => {
     vi.mocked(canPost).mockResolvedValue({ allowed: true });
     vi.mocked(db.query.botContentSources.findMany).mockResolvedValue([]);
     
+    const result = await processScheduledPosts();
+    expect(result.processed).toBe(1);
+    expect(result.details[0].status).toBe('posted');
+  });
+  
+  it('should skip bots when active sources have no content available', async () => {
+    const { db } = await import('@/db');
+    const { canPost } = await import('./rateLimiter');
+    
+    vi.mocked(db.query.bots.findMany).mockResolvedValue([
+      {
+        id: 'bot-1',
+        scheduleConfig: JSON.stringify({
+          type: 'interval',
+          intervalMinutes: 30,
+        }),
+        lastPostAt: null,
+      } as any,
+    ]);
+    
+    vi.mocked(canPost).mockResolvedValue({ allowed: true });
+    vi.mocked(db.query.botContentSources.findMany).mockResolvedValue([
+      { id: 'source-1' } as any,
+    ]);
+    vi.mocked(db.query.botContentItems.findFirst).mockResolvedValue(undefined);
+    
     const result = await processScheduledPosts();
     expect(result.skipped).toBe(1);
     expect(result.details[0].status).toBe('skipped_no_content');