feat: Voice v0.8.0 + feature discovery + Edge Function removal (#55)

* chore: remove Supabase Edge Function MCP deployment

The Edge Function never worked reliably. All MCP traffic goes through
self-hosted server + ngrok tunnel. Removes deploy-remote.sh, edge-entry.ts,
supabase/functions/, .env.production.example, and CHATGPT.md (OAuth not
implemented).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: rewrite MCP docs for self-hosted + ngrok deployment

All per-client guides updated from Edge Function URLs to self-hosted
server + ngrok tunnel pattern. DEPLOY.md rewritten with local vs remote
paths. ALTERNATIVES.md now shows self-hosted as primary, with ngrok,
Tailscale, and Fly.io/Railway comparison.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: voice recipe v0.8.0 — 25 production patterns from real deployment

Identity separation, pre-computed bid system, conversation timing fix,
proactive advisor mode, radical prompt compression, OpenAI Realtime
Prompting Guide structure, auth-before-speech, brain escalation, stuck
watchdog, never-hang-up rule, thinking sounds, fallback TwiML, tool set
architecture, trusted user auth, caller routing, dynamic VAD, on-screen
debug UI, live moment capture, belt-and-suspenders post-call, mandatory
3-step post-call, WebRTC parity, dual API events, report-aware query
routing. WebRTC pseudocode updated with native FormData and 6 gotchas.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: post-upgrade feature discovery framework

upgrade.ts captures old version before upgrading, then execs
gbrain post-upgrade (new binary) to read migration files and print
feature pitches. Migration files get YAML frontmatter with feature_pitch
field (headline, description, recipe, tiers). CLI prints excited builder
tone post-upgrade. v0.8.0 migration offers voice setup with environment
detection (server vs local) and 3-tier progressive disclosure.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add Voice section to README with WebRTC screenshot + tweet link

Her out of the box: voice-to-brain with 25 production patterns. WebRTC
client screenshot embedded. Remote MCP section rewritten for self-hosted
+ ngrok. Setup block genericized.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: add recipe validation tests + genericize personal refs

5 new integration tests: secrets completeness, semver version, requires
resolution, all-recipes-parse, no-personal-references. Test fixture
genericized. CLAUDE.md/TODOS.md/SKILLPACK updated for v0.8.0. build:edge
script removed from package.json.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.8.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,24 @@
 
 All notable changes to GBrain will be documented in this file.
 
+## [0.8.0] - 2026-04-11
+
+### Added
+
+- **Your AI can answer the phone now.** Voice-to-brain v0.8.0 ships 25 production patterns from a real deployment. WebRTC works in a browser tab with just an OpenAI key, phone number via Twilio is optional. Your agent picks its own name and personality. Pre-computed engagement bids mean it greets you with something specific ("dude, your social radar caught something wild today"), not "how can I help you?" Context-first prompts, proactive advisor mode, caller routing, dynamic noise suppression, stuck watchdog, thinking sounds during tool calls. This is the "Her" experience, out of the box.
+- **Upgrade = feature discovery.** When you upgrade to v0.8.0, the CLI tells you what's new and your agent offers to set up voice immediately. WebRTC-first (zero setup), then asks about a phone number. Migration files now have YAML frontmatter with `feature_pitch` so every future version can pitch its headline feature through the upgrade flow.
+- **Remote MCP simplified.** The Supabase Edge Function deployment is gone. Remote MCP now uses a self-hosted server + ngrok tunnel. Simpler, more reliable, works with any AI client. All `docs/mcp/` guides updated to reflect the actual production architecture.
+
+### Changed
+
+- **Voice recipe is now 25 production patterns deep.** Identity separation, pre-computed bid system, context-first prompts, proactive advisor mode, conversation timing (the #1 fix), no-repetition rule, radical prompt compression (13K to 4.7K tokens), OpenAI Realtime Prompting Guide structure, auth-before-speech, brain escalation, stuck watchdog, never-hang-up rule, thinking sounds, fallback TwiML, tool set architecture, trusted user auth, caller routing, dynamic VAD, on-screen debug UI, live moment capture, belt-and-suspenders post-call, mandatory 3-step post-call, WebRTC parity, dual API event handling, report-aware query routing.
+- **WebRTC session pseudocode updated.** Native FormData, `tools` in session config, `type: 'realtime'` on all session.update calls. WebRTC transcription NOT supported over data channel (use Whisper post-call).
+- **MCP docs rewritten.** All per-client guides (Claude Code, Claude Desktop, Cowork, Perplexity) updated from Edge Function URLs to self-hosted + ngrok pattern.
+
+### Removed
+
+- **Supabase Edge Function MCP deployment.** `scripts/deploy-remote.sh`, `supabase/functions/gbrain-mcp/`, `src/edge-entry.ts`, `.env.production.example`, `docs/mcp/CHATGPT.md` all removed. The Edge Function never worked reliably. Self-hosted + ngrok is the path.
+
 ## [0.7.0] - 2026-04-11
 
 ### Added