Run Playwright e2e tests in WASM CI

[tameware]

Summary

• Clear the .bazelrc -e2e filter in ci_wasm.yml with empty --test_tag_filters= so Playwright (dds_mvp_e2e_test inside //web:web_system_tests) actually runs in CI.
• Add //python:ci_wasm_e2e_test to guard that WASM CI keeps clearing the filter.
• Note the CI override in specs/web-mvp.md, specs/build-system.md, and docs/wasm_build.md.

Fixes #256

Test plan

• bazelisk test //python:ci_wasm_e2e_test
• Confirm CI – WASM job runs dds_mvp_e2e_test (not filtered by -e2e)
• Spot-check that unit/system targets in the same step still pass

Made with Cursor

[Copilot]

Pull request overview

This PR updates the WASM CI workflow to ensure Playwright-based web e2e tests are no longer filtered out by the default .bazelrc -e2e tag filter, and adds a Python guard test + documentation notes to keep that CI behavior from regressing.

Changes:

• Update .github/workflows/ci_wasm.yml to pass --test_tag_filters= so //web:web_system_tests includes dds_mvp_e2e_test in WASM CI.
• Add //python:ci_wasm_e2e_test to assert (a) .bazelrc still excludes e2e by default and (b) WASM CI explicitly clears that filter.
• Document the CI override in specs/web-mvp.md, specs/build-system.md, and docs/wasm_build.md.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
specs/web-mvp.md	Notes that WASM CI clears the default -e2e filter so the e2e test runs as part of web_system_tests.
specs/build-system.md	Documents that the default -e2e filter exists and that WASM CI clears it for Playwright.
python/tests/ci_wasm_e2e_test.py	Adds a guard test asserting .bazelrc excludes e2e by default and ci_wasm.yml clears the filter on its bazelisk test invocation.
python/BUILD.bazel	Registers the new ci_wasm_e2e_test and wires required runfiles (.bazelrc, workflows).
docs/wasm_build.md	Documents that WASM CI passes empty --test_tag_filters= so //web:web_system_tests includes Playwright.
.github/workflows/ci_wasm.yml	Clears inherited -e2e filtering by adding --test_tag_filters= to the WASM CI test step.

[tameware]

Confirmed the e2e tests are running:

[342 / 344] 7 / 9 tests; Testing //web:dds_mvp_e2e_test; 3s local ... (2 actions running)
[342 / 344] 7 / 9 tests; Testing //web:dds_mvp_e2e_test; 5s local ... (2 actions running)
[343 / 344] 8 / 9 tests; Testing //web:dds_mvp_e2e_test; 7s local
[343 / 344] 8 / 9 tests; Testing //web:dds_mvp_e2e_test; 17s local
[343 / 344] 8 / 9 tests; Testing //web:dds_mvp_e2e_test; 38s local