chore: fix driver test suite

[NathanFlurry]

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• Bug fix (non-breaking change which fixes an issue)
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• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

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• I have added tests that prove my fix is effective or that my feature works
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[NathanFlurry]

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• chore: fix driver test suite #4591 👈 (View in Graphite)
• chore: remove udb as a dependency of envoy-client #4587 : 1 other dependent PR (#4588 )
• chore: revert actor v2 hack #4586
• fix: fix pool metadata protocol version refresh, rivetkit native ws #4585
• feat: US-001 - Define SqliteKv trait in rivetkit-sqlite-native #4584
• feat(rust/engine-runner): minimal rust engine runner #4289
• chore: delete kv channel #4583
• feat(engine): rust runner #4582
• chore: remove non-engine drivers #4574 : 1 other dependent PR (#4581 )
• feat: dynamic actors #4397
• fix: driver test suite & sqlite reliability #4559
• fix: remove serverless token #4572
• fix: misc token fixes #4569
• fix(pb): clean up actor stop decision handling #4566
• fix(envoy): use global instance, add signal handlers #4565
• chore: misc fixes, add pb snapshot test #4561
• fix(cache): make in memory cache global #4560
• main

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[claude]

PR Review: chore: fix driver test suite\n\nThis PR covers driver test fixtures, native SQLite FFI, envoy shutdown improvements, dynamic isolate KV additions, and actor key serialization changes. The overall direction is solid. A few items worth flagging:\n\n### Issues\n\n**serialize_actor_key format change may be a breaking data migration**\nengine/packages/guard/src/routing/pegboard_gateway/resolve_actor_query.rs\n\nThe serialization changed from JSON (["a","b"]) to slash-separated (a/b). Any existing actor keys routed with the old JSON format will silently stop matching. If this format is only used transiently for routing and never persisted, document that in a comment. If it was persisted, a dual-decode fallback is needed for in-flight traffic.\n\nAlso, EMPTY_KEY: &str = "/" is used both as the representation for an empty-array key and as the separator in join(EMPTY_KEY). The name only describes one role. Consider splitting into two named constants for clarity.\n\n**bypass_cache: true is now unconditional**\nengine/packages/pegboard/src/ops/actor/create.rs\n\nThe comment says this is needed "after serverless metadata refresh" but bypass_cache: true is applied on every actor creation. This will hit the runner-config store on every create, not just after metadata refreshes. Consider restoring conditional logic or making it configurable at the call site if this has throughput implications.\n\nSQLite mutex held across all step iterations\nrivetkit-typescript/packages/rivetkit-native/src/database.rs\n\nIn execute_statement and query_statement, the lock guard is held for the entire step loop. Running inside spawn_blocking prevents an async deadlock, but a long-running query will block any concurrent close() call. Acceptable for now but worth noting.\n\n**exec_statements tail pointer comparison is fragile**\n\nComparing raw *const c_char pointers to detect "no progress" (if tail == remaining) relies on undocumented SQLite behavior. Prefer if tail.is_null() || tail == remaining { break; } with a comment.\n\n**SQLITE_TRANSIENT blob binding copies twice**\nbind_params in rivetkit-typescript/packages/rivetkit-native/src/database.rs\n\nThe blob is cloned to a local Vec and then SQLITE_TRANSIENT causes SQLite to copy it again. Either use SQLITE_STATIC tied to the Vec's lifetime, or add a comment that the double-copy is intentional for simplicity.\n\n### Notes\n\n- Envoy shutdown signaling in connection.rs/envoy.rs/handle.rs: Good fix. Double-check at loop entry and after connection attempt prevents a reconnect race. Acquire/Release ordering is correct.\n- vitest.base.ts concurrency: Clean approach using availableParallelism() with cpus().length fallback. Removing the fake-timer TODO comment is fine cleanup.\n- rivet-util-serde extraction: Good separation of concerns.\n- patchRequestBodyReaders: Good improvement — also patching text() and json() fixes a class of body-read bugs in dynamic isolate requests.\n- RIVETKIT_DYNAMIC_ALLOW_LOCALHOST_NETWORK=1: Reasonable test escape hatch; should be documented as not for production use.\n- Registry split to registry-static.ts + registry-dynamic.ts: Clean separation.\n- isMusl defensive check in index.js: Correct fix for environments where process.report.getReport() returns null.\n- DYNAMIC_REGISTRY_STATIC_ACTOR_NAMES hardcoding: A comment explaining the criteria for adding entries here would help future contributors.