refactor: migrate linting to Oxlint

packages/core/session/src/index.ts

@@ -596,7 +596,7 @@ export class Session {
     for (const seq of nodes.slice(this.derivedNodes)) {
       // Surface sequences are built from this.log — seq is always a valid
       // index by construction. The non-null assertion expresses that invariant.
-      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      // oxlint-disable-next-line typescript/no-non-null-assertion
       const msg = this.deriveEventMessage(this.log[seq]!)
       // A surface node is one of the five message-producing types, but an
       // empty-content assistant/message (a max-tokens step that hosts only
@@ -911,7 +911,7 @@ export class SessionStore extends Service {
       } catch (error: unknown) {
         // Preserve the listener's exact rejection value; flush is a caller-owned
         // failure boundary, and Cordis listeners may throw arbitrary values.
-        // eslint-disable-next-line @typescript-eslint/prefer-promise-reject-errors
+        // oxlint-disable-next-line typescript/prefer-promise-reject-errors
         return Promise.reject(error)
       }
     }))

packages/core/session/src/surface.ts

@@ -340,7 +340,7 @@ export class SurfaceManager implements SessionSurface {
   /** Fold events appended since the previous access. */
   private _processDelta(): void {
     for (let i = this._lastProcessedSeq + 1; i < this.log.length; i++) {
-      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion -- bounded by the loop condition
+      // oxlint-disable-next-line typescript/no-non-null-assertion -- bounded by the loop condition
       applySurfaceEvent(this._state, this.log[i]!, i, this.log)
       this._lastProcessedSeq = i
     }

packages/core/session/tests/chunk-rows.spec.ts

@@ -86,7 +86,7 @@ describe('packChunkRuns', () => {
     ['a block-index switch', [...deltaRun('text-delta', 2), ...deltaRun('text-delta', 1, 2, 7)]],
     ['a step switch', deltaRun('text-delta', 3).map((e, k) => k === 2 ? chunkEvent(e.seq, e.time, (e.data as { chunk: StreamChunk }).chunk, 1, 2) : e)],
   ])('breaks a run on %s (both halves too short to pack)', (_label, events) => {
-    expect(packChunkRuns(events as SessionEvent[])).toStrictEqual(events)
+    expect(packChunkRuns(events)).toStrictEqual(events)
   })
 
   it('breaks a tool-call run on call-id or name change', () => {