fix(lock): validate platform qualifiers when reading from lockfile

[jdx]

Summary

Fix a bug where invalid platform keys (like linux-x64-wait-for-gh-rate-limit) from tool-specific entries in the lockfile were being propagated as target platforms for all tools during mise lock.

The issue was introduced in #7180 when collecting existing platforms from lockfiles. Platform::parse() accepts any qualifier string (like wait-for-gh-rate-limit from the wait-for-gh-rate-limit tool's lockfile entry), but these should not be used as target platforms for other tools.

Root cause

When mise lock runs, it collects target platforms from:

1. Common platforms (linux-x64, linux-arm64, macos-x64, macos-arm64, windows-x64)
2. Current platform
3. Existing platforms in the lockfile

Step 3 was reading all platforms.* keys from all tools in the lockfile without validating that they're valid platform qualifiers. So when a tool like wait-for-gh-rate-limit had its own unique platform key linux-x64-wait-for-gh-rate-limit, that was added to the set of target platforms for ALL tools.

The fix

Now we call platform.validate() after parsing to ensure only known-valid qualifiers (gnu, musl, msvc, baseline, musl-baseline) are included as target platforms.

Test plan

• Build succeeds
• Lint passes

🤖 Generated with Claude Code

---

Note

Validate lockfile platform keys and ignore invalid/tool-specific qualifiers when deriving target platforms for mise lock.

• Lock CLI:
  • Update src/cli/lock.rs determine_target_platforms to include lockfile platforms only if Platform::validate() succeeds, preventing tool-specific/invalid qualifiers from becoming target platforms.

^{Written by Cursor Bugbot for commit d7ef083. This will update automatically on new commits. Configure here.}

[Copilot]

Pull request overview

This PR fixes a bug where invalid platform qualifiers from tool-specific lockfile entries were incorrectly propagated as target platforms for all tools during mise lock operations.

Key changes:

• Added validation check to filter out invalid platform qualifiers when reading from lockfile
• Updated comment to clarify that only valid platforms are included from existing lockfile

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.11.11 x -- echo	18.7 ± 0.6	18.2	24.7	1.00
mise x -- echo	18.9 ± 0.6	18.2	27.2	1.01 ± 0.04

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.11.11 env	18.3 ± 0.4	17.7	20.7	1.00
mise env	18.7 ± 0.4	18.0	21.0	1.02 ± 0.03

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.11.11 hook-env	18.6 ± 0.5	17.8	21.1	1.00
mise hook-env	18.6 ± 0.3	18.0	20.1	1.00 ± 0.03

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.11.11 ls	16.5 ± 1.3	15.2	21.5	1.03 ± 0.08
mise ls	16.1 ± 0.3	15.4	17.7	1.00

xtasks/test/perf

Command	mise-2025.11.11	mise	Variance
install (cached)	106ms	108ms	-1%
ls (cached)	64ms	65ms	-1%
bin-paths (cached)	71ms	71ms	+0%
task-ls (cached)	431ms	424ms	+1%