chore: bump qsl compat bundle to 2026.07.1 (phase-2 runtime)

[Pigbibi]

Summary

• Update qsl.toml: bump qsl.compat.bundle to 2026.07.1.
• Phase-2 runtime compatibility sweep for QSL warning convergence.
• No functional behavior changes intended.

Validation

• Verified via \� minimal repo checks in this branch before PR.
• clean.

Notes

• If any previously failing tests exist, they are pre-existing unless explicitly introduced in commit dea671b.

[github-actions]

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