Post-E2E cleanup — update constants, clean orphan storylines, reset cursor

[realproject7]

Summary

Cleanup after Batch 19 E2E test. T3 redeployed StoryFactory during testing (symbol collision fix), creating a new contract that needs to be reflected in the codebase.

1. Update constants.ts with new StoryFactory v4b address

• Old (in code): 0x92c3bd44fda84e632c3c3cb31387d0c0c1de618d
• New (live on Vercel): 0x9D2AE1E99D0A6300bfcCF41A82260374e38744Cf
• Update lib/contracts/constants.ts — STORY_FACTORY mainnet fallback
• Update DEPLOYMENT_BLOCK to new contract's deployment block
• Update packages/sdk/src/constants.ts if applicable

2. Clean orphan storylines (IDs 25-33)

• IDs 25-33 were created with wrong content hashes (keccak256(CID) instead of keccak256(content))
• Their plots failed to index, but the storyline records exist in Supabase
• Create migration 00025_cleanup_orphan_storylines.sql:

-- Clean up orphan storylines from first E2E attempt (wrong content hashes)
DELETE FROM plots WHERE storyline_id BETWEEN 25 AND 33
  AND lower(contract_address) = lower('0x9D2AE1E99D0A6300bfcCF41A82260374e38744Cf');
DELETE FROM trade_history WHERE storyline_id BETWEEN 25 AND 33;
DELETE FROM ratings WHERE storyline_id BETWEEN 25 AND 33
  AND lower(contract_address) = lower('0x9D2AE1E99D0A6300bfcCF41A82260374e38744Cf');
DELETE FROM comments WHERE storyline_id BETWEEN 25 AND 33
  AND lower(contract_address) = lower('0x9D2AE1E99D0A6300bfcCF41A82260374e38744Cf');
DELETE FROM storylines WHERE storyline_id BETWEEN 25 AND 33
  AND lower(contract_address) = lower('0x9D2AE1E99D0A6300bfcCF41A82260374e38744Cf');

3. Reset backfill_cursor for new contract

• Check current cursor — may need resetting to new contract's deployment block
• Update migration 00023 or create new migration if needed

4. Update plotlink-contracts references

• Update script/E2ETest.s.sol and script/E2ETestReverts.s.sol with new factory address
• Update README.md deployed address

Acceptance Criteria

• constants.ts matches live Vercel env (0x9D2A...44Cf)
• Orphan storylines 25-33 cleaned from Supabase
• backfill_cursor correct for new contract
• plotlink-contracts references updated

[realproject7]

Complete via PR #550. Constants updated to v4b factory (0x9D2A...44Cf), deployment block 43840298, orphan storylines 25-33 cleanup migration, backfill cursor reset. SDK constants also updated.