* fix: strip comments before scanning for missing imports
The scanForMissingImports regex matched require() and import() patterns
inside JSDoc comments, causing false-positive missing module detection.
A documented path like `require('./commands/proactive.js')` in a comment
was resolved from the wrong directory, marked as missing, then the global
onResolve handler intercepted ALL imports of that specifier — including
valid ones — replacing them with truthy noop stubs that broke runtime.
Strip block (/* */) and line (//) comments from source before scanning.
* fix: repair 10 pre-existing test failures
- promptIdentity.test.ts: define MACRO global (ISSUES_EXPLAINER etc.)
for test mode where Bun.define build-time replacements aren't active
- context.test.ts: clear OPENAI_MODEL env var in each test — the user's
environment (e.g. OPENAI_MODEL=github_copilot/gpt-5.4) polluted the
provider-qualified lookup, returning wrong context windows
- openclaudePaths.test.ts: set CLAUDE_CONFIG_DIR to force .openclaude
path when ~/.openclaude doesn't exist on the test machine
