… code connect maintanence

…fix changelog detection

Rooted in a single discovery: the Figma Code Connect batch JSON
(`icons.figma.batch.json`) was leaking into published `esm/` builds.
Investigation revealed `--copy-files` in our babel build commands copies
non-compilable files (.json, .md) unconditionally — the babel `ignore`
list and `--no-copy-ignored` flag have no effect on them. This led to a
broader audit of what else was slipping through.

Build (esm output)
- Remove `--copy-files --no-copy-ignored` from babel build commands in
  web, mobile, common, utils, web-visualization, mobile-visualization,
  web-utils, docusaurus-plugin-kbar, docusaurus-plugin-llm-dev-server,
  and figma-api. None of these packages import non-JS assets at runtime,
  so the flag served no purpose and was copying figma batch JSONs and
  stray READMEs into the published build.

Changelog / version-bump detection
- Expand `DEV_FILES_REGEX` in `tools/ci/getAffectedPackages.mjs` to
  match figma batch files (`*.figma.batch.ts/json`) and to treat the
  standard test/dev directories (`__tests__`, `__stories__`, `__mocks__`,
  `__fixtures__`) as dev-only — not just `__stories__` as before. This
  means test helpers, fixtures, and perf tests inside those dirs no longer
  falsely flag a package for a changelog entry.

Test runner consistency
- Switch `packages/mobile` test target from `@nx/jest:jest` executor to
  `nx:run-commands` (`jest --maxWorkers=75%`, `cwd: {projectRoot}`),
  making it identical to the web test target.

Perf test relocation
- Move component-config reassure benchmarks from `src/perf/component-config/`
  into `src/__tests__/perf/component-config/` (web + mobile) so the
  existing `**/__tests__/**` ignore globs handle them — no special-casing
  needed in babel or tsconfig. Update `perf:component-config` script paths.
  Note: the script itself remains a known-broken manual benchmark (pre-existing
  rot, unrelated to these changes); tracked in CDS-2196.

Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

Moving `*.perf-test.tsx` files into `__tests__/` dirs (for correct build
exclusion) caused them to match the `**/__tests__/**` ESLint config block,
which applies the jest plugin including `jest/expect-expect`. Reassure
benchmarks use `measurePerformance` instead of `expect()` by design, so
this rule fires incorrectly on all perf tests.

Adds a `**/*.perf-test.{ts,tsx}` override to turn off `jest/expect-expect`
globally (mirroring the existing migrator override), and removes the now-
redundant inline `// eslint-disable` comments that were previously added
as workarounds in the 21 perf-test files already living in `__tests__/`.

Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>