fix(multishot): preserve tools across dispatch rounds

[drewstone]

Summary

• keep tool definitions attached across multishot follow-up dispatch calls
• add maxToolDispatches to fail loudly when one assistant turn loops too far
• bump agent-eval / Python RPC package version trio to 0.96.2

Verification

• pnpm vitest run tests/multishot/multishot.test.ts → 7/7 passed
• pnpm typecheck → passed
• NODE_OPTIONS=--max-old-space-size=8192 pnpm build → passed
• pnpm lint → exit 0
• pnpm test → 247 files passed, 2528 passed, 2 skipped
• pnpm verify:package → passed
• git diff --check → passed
• git merge-tree --write-tree origin/main HEAD → passed

[tangletools]

✅ Auto-approved PR — 941177d2

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_{tangletools · auto-approval · reason: blanket_auto_approve · 2026-06-22T15:55:46Z}