[dmccoystephenson]

Summary

• TraceClient.cs: the constructor now passes the program's raw log callback (_log) to ReadOrCreateInstallId instead of the instance Log method. Log wraps Note, which adds the [trace] prefix, so install ID file failures were logged as [trace] [trace] using an in-memory install ID .... Note already guards against a null or throwing logger, so no protection is lost.
• InstallIdTest.Client_WithAnUnreadableFileLogsWhyAndLeavesItAlone: the assertion that pinned the doubled prefix (added in Test an unreadable install ID file through the constructor #20) now expects a single prefix.
• InstallIdTest.Client_WithAnUnwritableFileStillReportsWithAnInMemoryId: the loose Contains("in-memory install ID") check is tightened to StartsWith("[trace] using an in-memory install ID for this process: could not write "), so the write path is covered as well.

No change to the wire format, the opt-outs, the public API or the README. The log message wording stays the same; only the duplicate prefix is removed.

Test plan

• Build workflow green on ubuntu-latest (net8.0)
• Build workflow green on windows-latest (net8.0 + net48)

dotnet is not available in the dispatch sandbox, so nothing was run locally. CI on the PR head is the anchor.

Deferred

• Non-ASCII application name drops every report on .NET 5+ (User-Agent header) #12 (a non-ASCII application name is dropped on .NET 5+): the fix changes the User-Agent wire format shared with the Java and Python clients, so the maintainer has to pick an option. It is not suitable for an autonomous cycle.

Closes #21

This PR description was drafted during a Gardener session (https://github.com/Stephenson-Software/gardener).

🤖 Generated with Claude Code

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drafted by Claude on behalf of Daniel Stephenson

[dmccoystephenson]

Self-review rubric (one pass, anchored on CI run 40985877536):

• Scope: PASS — two files: the one-line call-site change in src/TraceClient/TraceClient.cs and the two assertions in tests/TraceClient.Tests/InstallIdTest.cs that cover it.
• Tests-new: PASS (n/a) — no public member added.
• Tests-fix: PASS, via fallback-ladder rung 2. dotnet is unavailable in the dispatch sandbox, so the stash-and-run could not be performed locally. The pre-existing test Client_WithAnUnreadableFileLogsWhyAndLeavesItAlone asserted the old behaviour, StartsWith("[trace] [trace] using an in-memory install ID ..."), and was green on main (run 40801406690). This diff changes it to StartsWith("[trace] using ..."), which the doubled string cannot satisfy. That is a recorded FAIL→PASS for the read path. The tightened write-path assertion has no before/after evidence of its own, but it exercises the same call-site change.
• Sibling structure / renames: PASS (n/a) — no new files and no renames.
• Docs: PASS — README has no mention of the [trace] prefix or the install-ID log messages. The XML docs for InstallIdFromFile / InstallId do not describe log output.
• Issue resolution: PASS — Install ID file failures are logged with a doubled [trace] prefix #21's suggested fix (ReadOrCreateInstallId(installIdFile, _log)) and its suggested test change are both applied.
• CI: PASS — ubuntu-latest net8.0 91/91, windows-latest net8.0 91/91 and net48 91/91.
• No dependencies / single file / vendoring floor: PASS — the csproj is untouched and no using was added.
• Never throws: PASS — Note still null-checks and swallows a throwing logger. Client_WhoseIdFileFailsStillConstructsWhenTheLoggerThrows stays green.
• Non-blocking & bounded, environment seam, version, opt-out contract: PASS (n/a) — none of these were touched.

Observation outside the diff: _log is assigned at src/TraceClient/TraceClient.cs:189, before the call at line 217, so it is never read uninitialized.

No judgment calls remain, so no inline findings were raised.

This review comment was drafted during a Gardener session (https://github.com/Stephenson-Software/gardener).

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drafted by Claude on behalf of Daniel Stephenson