fix(bench): load benchmark sources as file URLs so they run on Windows (#27621)

* fix(bench): resolve dynamically imported sources as file URLs

`await import(path.join(ROOT, '...ts'))` hands Node a bare Windows path
(`C:\...`), which the ESM loader rejects as an unsupported URL scheme
("Received protocol 'c:'"). The two benchmarks that load production
modules this way crashed on Windows before running a single scenario,
while working on macOS and Linux where an absolute path is a valid
specifier.

Wrap each computed specifier in `pathToFileURL(...).href`, the form the
other benchmark scripts already use for the same purpose.

Verified on Windows: bench:session-write-hot-path and
bench:agent-inspection-cadence now run and print their measurement
tables. The fish mode-2031 trace capture resolves its import too, but its
harness targets macOS/Linux shells and cannot complete on Windows.

Fixes #25235

* style(bench): format the session-write benchmark's file-URL import

---------

Co-authored-by: Paolo <paovalletta@hotmail.it>
Co-authored-by: Orca Worker <orca-worker@localhost>

config/scripts/agent-inspection-cadence-batching-benchmark.mjs

@@ -12,7 +12,7 @@ import fs from 'node:fs'
 import nodeModule from 'node:module'
 import path from 'node:path'
 import process from 'node:process'
-import { fileURLToPath } from 'node:url'
+import { fileURLToPath, pathToFileURL } from 'node:url'
 
 if (!process.execArgv.includes('--experimental-transform-types')) {
   const result = spawnSync(
@@ -51,13 +51,17 @@ for (const paneCount of PANE_COUNTS) {
 }
 
 const { nextCadenceInspectionDelayMs } = await import(
-  path.join(ROOT, 'src/renderer/src/components/terminal-pane/agent-completion-poll-interval.ts')
+  pathToFileURL(
+    path.join(ROOT, 'src/renderer/src/components/terminal-pane/agent-completion-poll-interval.ts')
+  ).href
 )
 const { POLL_TIER_INTERVAL_MS } = await import(
-  path.join(ROOT, 'src/renderer/src/components/terminal-pane/agent-completion-poll-cadence.ts')
+  pathToFileURL(
+    path.join(ROOT, 'src/renderer/src/components/terminal-pane/agent-completion-poll-cadence.ts')
+  ).href
 )
 const { PROCESS_TABLE_SNAPSHOT_MAX_STALENESS_MS } = await import(
-  path.join(ROOT, 'src/shared/process-table-snapshot-reader.ts')
+  pathToFileURL(path.join(ROOT, 'src/shared/process-table-snapshot-reader.ts')).href
 )
 
 // Pre-change: independent ±10% jitter per pane, re-rolled on every reschedule.

config/scripts/session-write-hot-path-benchmark.mjs

@@ -15,7 +15,7 @@ import fs from 'node:fs'
 import nodeModule from 'node:module'
 import path from 'node:path'
 import process from 'node:process'
-import { fileURLToPath } from 'node:url'
+import { fileURLToPath, pathToFileURL } from 'node:url'
 
 if (!process.execArgv.includes('--experimental-transform-types')) {
   const result = spawnSync(
@@ -55,19 +55,20 @@ for (const [name, value] of [
 }
 
 const { capTerminalScrollbackSessionBuffer } = await import(
-  path.join(ROOT, 'src/shared/workspace-session-terminal-buffers.ts')
+  pathToFileURL(path.join(ROOT, 'src/shared/workspace-session-terminal-buffers.ts')).href
 )
 const { TERMINAL_SCROLLBACK_SESSION_BUFFER_BYTE_LIMIT } = await import(
-  path.join(ROOT, 'src/shared/terminal-scrollback-limits.ts')
+  pathToFileURL(path.join(ROOT, 'src/shared/terminal-scrollback-limits.ts')).href
 )
 const { remapAcknowledgedAgentPaneKeys } = await import(
-  path.join(ROOT, 'src/main/persistence/restoring-sessions/pane-key-remapping.ts')
+  pathToFileURL(path.join(ROOT, 'src/main/persistence/restoring-sessions/pane-key-remapping.ts'))
+    .href
 )
 const { clampUtf8TextTail, measureUtf8ByteLength } = await import(
-  path.join(ROOT, 'src/shared/utf8-byte-limits.ts')
+  pathToFileURL(path.join(ROOT, 'src/shared/utf8-byte-limits.ts')).href
 )
 const { isTerminalLeafId, makePaneKey, parsePaneKey } = await import(
-  path.join(ROOT, 'src/shared/stable-pane-id.ts')
+  pathToFileURL(path.join(ROOT, 'src/shared/stable-pane-id.ts')).href
 )
 
 function median(samples) {

tests/tools/fish-mode2031-repro/capture-fish-mode2031-trace.mjs

@@ -33,13 +33,16 @@ import { mkdtempSync, writeFileSync, mkdirSync, rmSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import path from 'node:path'
 import { createRequire } from 'node:module'
+import { pathToFileURL } from 'node:url'
 
 const require = createRequire(import.meta.url)
 const REPO_ROOT = path.resolve(import.meta.dirname, '../../..')
 
 const pty = require(path.join(REPO_ROOT, 'node_modules/node-pty'))
 const { INITIAL_MODE_2031_REPLY_SCAN_STATE, mode2031SequenceFor, scanMode2031ReplyDecision } =
-  await import(path.join(REPO_ROOT, 'src/shared/terminal-color-scheme-protocol.ts'))
+  await import(
+    pathToFileURL(path.join(REPO_ROOT, 'src/shared/terminal-color-scheme-protocol.ts')).href
+  )
 
 // ---------------------------------------------------------------- args