Refactor:
- session.ts: extract mapDebugpyMissingModule helper; replace the duplicated
inline check in launch/attach catch blocks. Add jsdoc on DapStartRequestFailure.settled
documenting per-call ownership and how throwPreferredDapStartError consumes it.
- path-utils.ts: replace the no-op keepOpaqueResourceUri branch with an
OPAQUE_RESOURCE_SCHEMES Set so the structure carries the intent. Functionally
equivalent; new opaque schemes become a one-line Set change.
Tests:
- dap-launch-failures: cover the debugpy stderr -> 'pip install debugpy'
rewrite for launch and attach, plus a negative case (non-debugpy adapter
with the substring in stderr is left untouched).
- dap-launch-failures: model the delayed-launch-failure case the new
settled-race in throwPreferredDapStartError defends against. FakeDapClient
gains optional launchErrorDelayMs/attachErrorDelayMs.
- dap-launch-failures (DebugTool): assert adapter:'debugpy' early-throw
surfaces 'python not found in PATH' on both launch and attach when
selectLaunchAdapter/selectAttachAdapter return null, and the unspecified-adapter
path still falls back to the generic 'No debugger adapter' error.
- find.ts: export validateFindPathInputs and pin the new backslash-escape
semantics (\, no longer trips the comma-joined heuristic) plus the
existing brace-expansion and rejection paths.
- patch.ts: cover the post-write verification error message. The user-facing
ToolError must contain the caller-supplied relative path and not the
absolute resolvedPath (which still lives in the structured context for
log correlation).
- split-internal-url-sel: reword two mcp:// test comments that described a
'peeler refuses' guard that doesn't exist; rename the tests to reflect the
actual opaque-scheme rule.
oldschoola