Three buyer-app changes that all landed during the same browser-debug
session and were verified end-to-end on Vector testnet:
UX-3-history — /tasks page is now indexer-driven (M1-F-5 followup)
- TaskHistory.tsx fetches /v1/indexer/escrows?buyer=<pkh> from the
buyer-app proxy, groups rows by (posted_at, supplier_pkh) into
lifecycle cards, and renders newest-first with state pill,
capability/model/price, and the tx-hash chain
- main.tsx drops the LocalStorageTaskHistoryStore (chain is the source
of truth; SDK uses MemoryTaskHistoryStore for in-flight only)
Path-B PiperTTS demo — capability-routed UI without escrow yet
- buyer/src/server.ts: POST /v1/synth-speech proxies to the openedai-
speech-min host; validates {text, voice, format, speed} and returns
audio bytes with the upstream Content-Type
- buyer/src/config.ts: TTS_PIPER_BASE_URL env (optional; absence keeps
/v1/synth-speech disabled with a clean 503)
- buyer/src/ui/components/PiperTTSForm.tsx: capability-specific form
(text + voice + format + speed slider) with inline <audio controls>
and a Download .mp3 anchor; blob URLs revoked on each submit + unmount
- buyer/src/ui/pages/Dashboard.tsx: capability registry — switch on
selected.capability_id to PromptForm vs PiperTTSForm; appends a
synthetic "PiperTTS (apex-simulation)" demo card so the capability
routing is exercisable before the on-chain TTS supplier ships
- deploy/testnet/docker-compose.buyer.yml: TTS_PIPER_BASE_URL points
at https://tts-piper.vector.testnet.apexfusion.org
Server-side error logging on /v1/submit-prompt
- buyer/src/server.ts: catch block now logs reason + message + stack
(the demo session lost ~30 minutes to a "<!DOCTYPE..." JSON-parse
error caused by Cloudflare replacing origin's clean 502+JSON with
its own HTML page; the actual upstream cause was a "wallet must
hold a pure-ADA UTxO >=5 ADA" lucid-evolution error that was
invisible because the Express handler had no logger)
Tests: 10 new for /v1/synth-speech (validation, defaults, success
shape, upstream 5xx, fetch-throw); existing buyer-ui-smoke supplier
count expectation updated for the synthetic Piper card (N+1)
