test(config,vitest): harden test isolation and complete vitest migration

[sroussey]

Summary

Bundles two related test-hygiene fixes on top of main (PR #210's vitest
migration is replayed here as the first commit, since the base branch does not
yet contain it — see note below):

• chore(test): complete the vitest migration on top of main. Adds
  vitest.config.ts with a resolveId plugin that appends .js to the
  workglow package's internal re-exports (its published ESM omits the
  extension, which Node's strict loader rejects). Routes workglow through
  Vite's transform pipeline via server.deps.inline. Uses pool: "forks" for
  native-module isolation (better-sqlite3, onnxruntime). Ports the
  runCliProcess helper for CLI-subprocess tests to node:child_process
  (Bun.spawn crossed stdout/stderr under vitest, breaking --format json
  parsing) and widens its env passthrough to USER, LOGNAME, CI,
  NODE_OPTIONS, XDG_CONFIG_HOME, XDG_CACHE_HOME. Replaces Bun.Glob with
  readdirSync + regex in the daily/quarterly index tests, swaps
  Bun.file(FIXTURE).text() for readFileSync(..., "utf-8") in the DEFM14A
  test trio, and gates the remaining Bun-only tests
  (BootstrapDownloadTask's Bun.file writers, SecFetchJob's Bun.serve
  loopback tests, the index-fetch tests whose JobQueueServer poll loop times
  out under Node/vitest) with describe.skipIf(typeof Bun === "undefined") +
  a TODO. Fixes ReturnType<typeof spyOn> → ReturnType<typeof vi.spyOn> in
  EntityTemporalRepo.test.ts. Adds better-sqlite3 as a devDependency so
  @workglow/sqlite/storage can bootstrap on Node.

• test(config): strip env-derived DI tokens on TestingDI reset. Adds
  ENV_DERIVED_TOKENS in src/config/tokens.ts (the canonical list of every
  token EnvToDI.ts and the CLI preAction hook project into the container),
  and has resetDependencyInjectionsForTesting() iterate it, calling
  globalServiceRegistry.container.remove(token.id) before repo
  re-registration. Deletes the SEC_DB_TYPE = "memory" as unknown as ...
  casts in the three sqlite test files
  (SpacDealReplace.sqlite.test.ts, Form8KEventReplace.sqlite.test.ts,
  Form8KEventLegacyMigration.test.ts), simplifies the save-and-restore hooks
  in db.test.ts and BootstrapDownloadTask.test.ts to just call the reset,
  and adds src/config/TestingDI.test.ts (asserts every env-derived token is
  stripped, and one repo token is still re-registered). Adds a TSDoc block
  above resetDependencyInjectionsForTesting() pinning the invariant.

Base note (PR #210)

main at HEAD does not yet contain PR #210
(chore/vitest-runner). The first commit here replays the net-effect final
state of PR #210 (vitest.config.ts, converted test files, runCliProcess
helper) so both fixes land in one PR — no chore/vitest-runner merge required
first.

Test plan

• bun x tsc --noEmit — zero type errors.
• bun x vitest run — 263 test files pass, 3 skipped, 0 failing (before:
  218 failing / 47 passing on the chore/vitest-runner head this
  replays).
• bun x vitest run src/config/TestingDI.test.ts — the new reset test
  passes.
• Manual walkthrough of the three Bun-gated test suites
  (BootstrapDownloadTask, SecFetchJob retry/wire, index-fetch) —
  each carries a TODO noting the underlying Bun-API dependence that would
  let the skip drop.

Known gaps

• FetchDailyIndexTask.test.ts / FetchQuarterlyIndexTask.test.ts are gated
  to Bun for now — the JobQueueServer poll loop times out under Node/vitest
  at pollIntervalMs: 1. That's a portability issue with the workglow queue
  server, pre-existing on the chore/vitest-runner head this PR replays; the
  skip is annotated with a TODO to migrate the test off the live-server
  pattern.

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