[jdjioe5-cpu]

Closes #5

Summary of Changes

1. Adopted Option 3 (Remove scaffold placeholder writes):

   • Completely removed ecordScaffoldSnapshot()\ in \services/indexer/src/watcher.ts.
   • Stopped inserting randomly generated \ vl\ (\Math.random()) and \dynamicApy\ numbers into \pool_snapshots\ on every indexer poll.
   • Enforced the project's strict 'no fake implementations' rule: presenting empty / no data is preferred over persisting fabricated figures indistinguishable from real on-chain metrics, pending Phase 5 live contract state reads and NAV feeds.
   • Removed unused \DATABASE_TABLES\ import from \services/indexer/src/watcher.ts.

2. Documentation:

   • Updated root \README.md\ (Indexer Architecture) to document that scaffold \pool_snapshots\ writes of randomly generated TVL and APY have been removed in accordance with the project's 'no fake implementations' rule.

3. Automated Testing:

   • Updated \services/indexer/test/watcher.test.ts\ with a dedicated unit test asserting that \supabase.from('pool_snapshots')\ is never called during poller execution.
   • Ran and passed all indexer tests (\pnpm --filter @yieldanchor/indexer test), workspace tests (\pnpm test), \pnpm run lint, and \pnpm run typecheck.