…417)

* [SEA-NodeJS] Unify kernel + driver logging into one DBSQLLogger sink

The Rust kernel emits its diagnostics via `tracing`; in a Node process nothing
subscribed to them, so kernel logs were silently dropped — the `DBSQLLogger`
only ever saw driver-side lines. This wires the kernel into the SAME logger (and
file) the driver uses, so logs from all three layers — driver, napi shim,
kernel — land in one place.

How:
- `SeaBackend.connect()` calls `installKernelLogBridge(binding, logger, level)`
  (new `lib/sea/SeaLogging.ts`), which registers a JS callback with the binding's
  `initKernelLogging`. The callback maps each kernel `LogRecord`
  (`{ level, target, message }`) onto the driver's `LogLevel` and re-emits it
  through `IClientContext.getLogger()`, tagged `[kernel <target>] …`.
- Kernel verbosity follows the driver logger's level: `IDBSQLLogger` gains an
  optional `getLevel()` (implemented by `DBSQLLogger`); the bridge passes it to
  the kernel so events the sink would drop never cross the bridge. Defaults to
  `info` for loggers that don't expose a level.
- Process-global, last-writer-wins + graceful no-op on an older binding without
  the bridge export (logging is advisory) — see SeaLogging docs.

Requires kernel napi `initKernelLogging`/`setKernelLogLevel`/`LogRecord`
(databricks-sql-kernel#126); `KERNEL_REV` bumped + binding rebuilt so the
generated `native/sea/index.d.ts` carries them.

Verified: tsc clean, eslint + prettier clean, SEA unit suite 256 passing (incl.
new SeaLogging unit tests), and a live end-to-end run confirms a single
DBSQLLogger file holds both driver lines and 29 `[kernel databricks::sql::kernel]`
lines for one `SELECT 1` (committed as tests/e2e/sea/logging-e2e.test.ts).

Co-authored-by: Isaac
Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

* [SEA-NodeJS] Retarget kernel log level on runtime logger.setLevel()

Follow-up to the unified-logging wiring: a runtime `logger.setLevel(...)` now
retargets the kernel-side bridge too, not just the driver's own transports —
keeping kernel verbosity in lock-step with the driver's at runtime, not only at
connect.

- `IDBSQLLogger` gains an optional `onLevelChange(listener) => unsubscribe`;
  `DBSQLLogger` implements it (fires subscribers from `setLevel`, swallowing a
  throwing listener so it can't break level setting).
- `installKernelLogBridge` now returns an unsubscribe handle and, when both the
  logger can notify (`onLevelChange`) and the binding can retarget
  (`setKernelLogLevel`), subscribes to forward level changes to the kernel.
- `SeaBackend` stores the handle and drops it on `close()` (no stale listener;
  the process-global kernel sink follows the existing last-writer-wins model).

Backend-agnostic: `DBSQLLogger` never references the SEA binding — the SEA layer
subscribes via the interface. Loggers without `onLevelChange` keep the
connect-time level; older bindings without `setKernelLogLevel` simply don't
subscribe.

Verified: tsc / eslint / prettier clean; unit suite 1183 passing incl. new
`DBSQLLogger` level-subscription tests + `SeaLogging` runtime-retarget tests
(retarget, unsubscribe, no-notify logger, no-retarget binding). Live: with the
logger started at `warn`, a healthy SELECT logged 0 kernel lines; after
`logger.setLevel('debug')` mid-session the next SELECT logged 12
`[kernel databricks::sql::kernel]` lines — proving the kernel was retargeted.

Co-authored-by: Isaac
Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

* chore(sea): bump KERNEL_REV to kernel main 80b68e1 + regen napi contract

Kernel #126 (logging bridge) and #127 (mTLS identity + custom HTTP headers)
are both merged to kernel main. Pin KERNEL_REV to the unified main SHA
80b68e1eef3b613910183a50dfa4dace854d50dd and regenerate native/sea/index.*
from it. The contract now carries both feature surfaces (gains the mTLS/headers exports from #127).

Co-authored-by: Isaac
Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

* fix(sea): align napi package name to @databricks/databricks-sql-kernel-*

Kernel #131/#135 renamed the published napi package
@databricks/sql-kernel -> @databricks/databricks-sql-kernel (declaring all 8
target triples + dropping private:true so the umbrella can publish). The
regenerated native/sea/index.js router now emits the new names, so update the
driver to match: the packaging test regex + M0 triple assertion, the version
test hint, the SeaNativeLoader install hint, and native/sea/README.md.

Fixes the 2 failing native-packaging unit tests surfaced by the KERNEL_REV
bump to kernel main 80b68e1.

Co-authored-by: Isaac
Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

---------

Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>