feat(#29): async NanaBanana webhook processing with DLQ & polling fal… - #187
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Darkvader-ship-it merged 2 commits intoAug 31, 2026
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…& polling fallback
- lib/generation-job-store.ts: persistent file-based job store (generationJobs +
generationDlq sidecars); jobs keyed by txHash for client polling; full CRUD
by txHash/taskId/id; automatic pruning (4h completed, 24h pending, 7d DLQ)
- lib/forge-nanobanana.ts: extract submitGenerateTask(); add
submitForgeImageTaskViaNanobananaApi() (returns taskId immediately, no poll);
add nanobananaAsyncWebhookEnabled() helper (requires NANOBANANA_WEBHOOK_SECRET
+ NANOBANANA_CALLBACK_URL)
- app/api/webhooks/nanobanana/route.ts: full implementation replacing stub;
HMAC-SHA256 signature verification against NANOBANANA_WEBHOOK_SECRET;
DLQ entries on sig failure / parse error / task failure; background pipeline
continuation (lore → IPFS → mint) after successful webhook delivery
- app/api/jobs/[txHash]/route.ts: new client polling endpoint; returns job
status (pending/processing/webhook_received/completed/failed) + result
- app/api/forge-agent/route.ts: when async webhook mode active + txHash known,
submits image task asynchronously and returns {async:true, jobId, txHash};
falls back to synchronous runForgePipeline on overload or unconfigured mode;
also fixes pre-existing typos (static const, randomUUId, catc, WWA-Authenticate)
- app/forge/page.tsx: initiateAgentForge() detects async:true response and
polls /api/jobs/[txHash] every 3.5s (4-min client timeout) until completed
or failed; sync path unchanged for fallback
Closes PHASE-STELLAR#29
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…lback
lib/generation-job-store.ts: persistent file-based job store (generationJobs + generationDlq sidecars); jobs keyed by txHash for client polling; full CRUD by txHash/taskId/id; automatic pruning (4h completed, 24h pending, 7d DLQ)
lib/forge-nanobanana.ts: extract submitGenerateTask(); add submitForgeImageTaskViaNanobananaApi() (returns taskId immediately, no poll); add nanobananaAsyncWebhookEnabled() helper (requires NANOBANANA_WEBHOOK_SECRET
app/api/webhooks/nanobanana/route.ts: full implementation replacing stub; HMAC-SHA256 signature verification against NANOBANANA_WEBHOOK_SECRET; DLQ entries on sig failure / parse error / task failure; background pipeline continuation (lore → IPFS → mint) after successful webhook delivery
app/api/jobs/[txHash]/route.ts: new client polling endpoint; returns job status (pending/processing/webhook_received/completed/failed) + result
app/api/forge-agent/route.ts: when async webhook mode active + txHash known, submits image task asynchronously and returns {async:true, jobId, txHash}; falls back to synchronous runForgePipeline on overload or unconfigured mode; also fixes pre-existing typos (static const, randomUUId, catc, WWA-Authenticate)
app/forge/page.tsx: initiateAgentForge() detects async:true response and polls /api/jobs/[txHash] every 3.5s (4-min client timeout) until completed or failed; sync path unchanged for fallback
Closes #29