feat: add scientific bounty system module

scientific-bounty-system/.env.example

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+PORT=3001
+SCIBASE_BOUNTY_DEMO_MODE=true
+ESCROW_PROVIDER=stripe_treasury_demo
+ARBITRATION_SECRET=demo-arbitration-secret
+PAYOUT_APPROVER_EMAIL=operations@scibase.ai

scientific-bounty-system/.gitignore

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+node_modules/
+dist/
+coverage/
+.env
+.DS_Store

scientific-bounty-system/README.md

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+# SCIBASE.AI Scientific Bounty System
+
+Self-contained implementation for issue #18. The module turns SCIBASE into a research challenge marketplace with sponsor-funded prizes, standardized submissions, arbitration, and payout routing.
+
+## What is included
+
+- Challenge posting data model with scientific context, visibility, NDA flag, IP terms, milestones, and rubrics
+- R&D templates across biotech, climate, ML, materials, chemistry, and quantum domains
+- Submission package builder with artifact hashes, reproducibility commands, audit logs, and team payout shares
+- Automated arbitration using weighted reviewer criteria and package-validity checks
+- Escrow validation to ensure prize funds are available before a challenge is accepted
+- Payout routing across solver team members with release conditions and IP-transfer handling
+- Sponsor dashboard UI plus JSON APIs for challenge review, arbitration, and payout previews
+- Tests for challenge validation, manifest creation, scoring, arbitration, incomplete-package rejection, payout splitting, and service workflows
+
+## Run locally
+
+```bash
+cd scientific-bounty-system
+npm install
+npm run dev
+```
+
+Open `http://localhost:3001`.
+
+## Verify
+
+```bash
+npm run typecheck
+npm test
+npm run build
+```
+
+## Demo API
+
+Sponsor dashboard:
+
+```bash
+curl -s http://localhost:3001/api/dashboard | jq .
+```
+
+Run arbitration:
+
+```bash
+curl -s http://localhost:3001/api/arbitration/challenge_biomarker_rna | jq .
+```
+
+Build payout instructions:
+
+```bash
+curl -s http://localhost:3001/api/payouts \
+  -H 'content-type: application/json' \
+  -d '{"challengeId":"challenge_biomarker_rna"}' | jq .
+```
+
+## Demo artifact
+
+- `docs/demo/dashboard.png`
+- `docs/demo/scientific-bounty-system-demo.mp4`
+
+The MP4 is intentionally small so it can be linked directly from a pull request while still showing the runnable sponsor dashboard.
+
+## Production integration notes
+
+The module isolates the risky workflows behind explicit service methods:
+
+- `validateChallenge` prevents underfunded or malformed challenges from opening.
+- `createSubmissionManifest` records artifact hashes, reproducibility commands, and team payout splits.
+- `arbitrateChallenge` ranks submissions using the challenge rubric, then checks the winning package before payout.
+- `buildPayoutInstruction` maps solver shares to payout routes and release conditions, including IP assignment when required.
+
+Recommended production follow-ups:
+
+- Persist challenges, submissions, reviews, escrow records, and payouts in the SCIBASE database.
+- Connect escrow state to Stripe Treasury, bank partner APIs, or institutional invoice reconciliation.
+- Add sponsor/reviewer authentication and immutable audit logs.
+- Add file scanning, malware checks, and sandboxed reproducibility execution before arbitration approval.

scientific-bounty-system/docs/demo-script.md

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+# Demo script
+
+1. Start the app with `npm run dev`.
+2. Open `http://localhost:3001`.
+3. Show the sponsor dashboard metrics:
+   - Open challenges
+   - Escrowed prizes
+   - Submissions
+   - Ready winners
+4. Click `Run arbitration` on the biomarker challenge.
+5. Show the arbitration result:
+   - Weighted ranking
+   - Winner
+   - Automated checklist
+   - Human approval flag
+6. Show the payout instruction:
+   - Team member payout routes
+   - IP release condition
+   - Sponsor approval requirement
+7. Run `npm test` to verify the core workflows.