feat: complete M0 — legal pages, consent, tip_views metrics, account deletion UI

- /legal/terms and /legal/privacy pages (linked from sign-in)
- Consent (consentGiven=true) recorded on first Google sign-in
- tip_views table: one row per tip served — enables activation + reaction rate queries
- tip_views purged on account deletion
- Delete account button on /connect (confirm → revoke tokens → purge data → sign out)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.playwright-mcp/page-2026-04-15T07-41-23-867Z.yml

@@ -0,0 +1,16 @@
+- main [ref=e2]:
+  - generic [ref=e3]:
+    - heading "oO" [level=1] [ref=e4]
+    - paragraph [ref=e5]: one tip. right now.
+  - link "Continue with Google" [ref=e7] [cursor=pointer]:
+    - /url: /api/auth/login?redirectTo=/connect
+    - img [ref=e8]
+    - text: Continue with Google
+  - paragraph [ref=e13]:
+    - text: By continuing you agree to our
+    - link "Terms" [ref=e14] [cursor=pointer]:
+      - /url: /legal/terms
+    - text: and
+    - link "Privacy Policy" [ref=e15] [cursor=pointer]:
+      - /url: /legal/privacy
+    - text: .