[CollinsKRO]

Implements upstream issues #475 and #476.

#475 — feat(stellar): reconstruct squad pools and verify resolved totals

• Adds src/stellar/squad-pools.ts: a pure, bounded reducer tracking per-market, per-side pool balances from deposited/withdrawn events.
• On resolved, compares reconstructed pools with poolA/poolB and emits a mismatch record (market id + expected/observed values) when they differ.
• Markets whose creation was never observed are marked unverifiable instead of mismatched.
• tests/squad-pools.test.mjs covers matching, mismatching, partially observed markets, and bounded eviction.

#476 — feat(bot): add an /events command listing recent notifications

• Adds src/notifications/recent.ts: a bounded ring buffer of delivered events fed by one call after successful sends.
• Adds src/commands/events.ts: /events command rendering the last N (default 10, max 30) as one-line summaries with explorer links, supporting /events market|squad filtering and chat allowlist; output split via splitTelegramMessage.
• Wires /events into the command registry and records delivered events in the poller after successful sends.
• tests/events-command.test.mjs covers buffer eviction, filtering, and rendering.

Verification

• tsc --noEmit (typecheck): clean
• tsc (build): clean
• New + bot-area tests: 67/67 passing
• lockfile:check: ok
• scan:secrets: no findings in new files (the single pre-existing finding in tests/pre-commit-scan.test.mjs predates this branch)

Closes #475
Closes #476

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[enliven17]

Hi @CollinsKRO, thank you for your contribution.

This PR is not currently in a mergeable state on GitHub, and its mergeability cannot be confirmed after recent repository updates, so I cannot merge it as-is.

Please recreate or rebase your branch from the current main branch and push an updated branch so we can review it again.

This is a mergeability/update note, not a malware finding. Once the branch is updated, we will review it again.

Thank you!