test: strip every inherited CODEMAN_* var from the suite (split from #476)

[opticon454]

Split out of #476 at @Ark0N's request: the test-environment isolation changes, on their own.

What changes

• test/setup.ts strips every inherited CODEMAN_* variable before the suite runs, not only the named ones. It also deletes CODEMAN_CASES_PATH explicitly. A Docker Compose deployment sets that variable, and it bypasses the temp HOME, so route tests wrote into the deployment's real case root when the suite ran inside that container. The existing named deletes (and upstream's CLAUDE_CONFIG_DIR strip) stay as documentation.
• test/test-env-isolation.test.ts pins both: CODEMAN_CASES_PATH joins STRIPPED_ENV_VARS, and a new case asserts that no CODEMAN_* key survives.
• test/quick-start.test.ts moves from port 3099 to 3299 (unused anywhere else in the suite), which it needed when the suite ran inside the deployment container, and gives beforeAll a 30s timeout. test/respawn-test-plan.md's port table follows.

Verification

npx vitest run --config config/vitest.ci.config.ts test/test-env-isolation.test.ts test/quick-start.test.ts with CODEMAN_CASES_PATH=/tmp/x CODEMAN_FOO=1 exported: 2 files, 38 tests pass.

🤖 Generated with Claude Code

https://claude.ai/code/session_01GuHtuPiHXdykq9T6rKQJ9n

[Ark0N]

Merged and shipped in 1.33.0 (https://github.com/Ark0N/Codeman/releases/tag/codeman@1.33.0). Thanks @opticon454 for splitting this out of #476 as asked. Stripping every CODEMAN_* variable rather than a named list is the right shape, and the CODEMAN_CASES_PATH case you found (route tests writing into a Compose deployment's real case root) is exactly the kind of leak the named list could never have caught.