feat: support Kiro CLI v2 and v3 hooks

AGENTS.md

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+# Elydora Node SDK Engineering Contract
+
+## Scope
+
+This repository owns the published `@elydora/sdk` package, its `elydora` CLI, local signing behavior, API client, generated hook runtime, and Node-specific agent adapters.
+
+## Integration Sources
+
+- Verify every agent hook contract against current official provider documentation before changing an adapter.
+- Treat `../Elydora-Open-Source/integrations/catalog.json` as the cross-product provider inventory.
+- Keep adapter delivery claims aligned with executable tests in this repository.
+- Synchronize completed provider behavior into the Python SDK, Go SDK, Open Source distribution, Console, Docs, and landing page through separate reviewed commits.
+
+## Hook Adapter Invariants
+
+- Preserve unrelated user configuration and remove only Elydora-owned entries.
+- Parse every affected user configuration before the first write.
+- Surface malformed or unreadable configuration with contextual errors and leave the original file intact.
+- Write configuration through a same-directory temporary file followed by an atomic rename.
+- Quote the current Node executable and generated script paths for the host shell.
+- Forward official hook JSON from STDIN without reshaping provider fields.
+- Use the provider's documented blocking mechanism. Command-hook providers that define exit code `2` must receive exit code `2` from the freeze guard.
+- Report installation as healthy only when a complete hook contract references both generated runtime scripts and both scripts exist.
+- Model stable, legacy, and early-access hook generations as explicit contracts. Keep their activation requirements visible in CLI output and README guidance.
+
+## Code Quality
+
+- Keep production source files at or below 500 lines.
+- Keep functions focused on one ownership boundary.
+- Propagate unexpected errors to the CLI boundary.
+- Use documented defaults only for genuinely optional configuration.
+- Avoid compatibility shims without a named public or user configuration contract.
+
+## Verification
+
+Run the focused adapter test during development, then execute all release gates before commit:
+
+```powershell
+npm run build
+node --test test/<provider>-plugin.test.mjs
+npm test
+npm audit --omit=dev --audit-level=high
+npm pack --dry-run --json
+git diff --check
+```
+
+Provider adapter tests must cover installation, idempotency, official event forwarding, blocking behavior, status, missing runtime files, uninstall ownership, and malformed configuration preservation.
+
+Commit and push one root issue before starting the next one.