Pin Linter Miner to a supported Copilot model

[Copilot]

Linter Miner failed because its Copilot runtime resolved to claude-sonnet-5, which was unavailable for the engine/account. The failure was configuration-driven, so retries would continue to fail.

• Workflow model

  • Pins the Linter Miner workflow to copilot/gpt-5.4 instead of inheriting the repository/default Copilot model.

• Inline sub-agents

  • Replaces ambiguous model: large declarations with the same explicit supported Copilot model for high-capability sub-agent work.

tracker-id: linter-miner
model: copilot/gpt-5.4
engine:
  id: copilot
  copilot-sdk: true

• Fixes [aw] Linter Miner failed #55833

[Copilot]

Pull request overview

Pins Linter Miner’s Copilot runtime to GPT-5.4 to prevent unsupported automatic model selection.

Changes:

• Pins the primary agent and two sub-agents.
• Regenerates the compiled workflow.

Show a summary per file

File	Description
.github/workflows/linter-miner.md	Adds explicit model configuration.
.github/workflows/linter-miner.lock.yml	Regenerates runtime model settings.

Review details

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Suppressed comments (2)

.github/workflows/linter-miner.md:217

• Inline Copilot sub-agent frontmatter is copied verbatim into a .agent.md file, so this provider-prefixed value is not normalized before Copilot reads it. Use the supported bare model ID; otherwise dispatching this scanner can still fail as an unsupported model.

model: copilot/gpt-5.4

.github/workflows/linter-miner.md:234

• This sub-agent model is also forwarded verbatim to Copilot, which expects gpt-5.4 rather than the provider-qualified copilot/gpt-5.4. As written, the linter-writing dispatch can fail with the same unsupported-model class this PR is intended to resolve.

model: copilot/gpt-5.4

• Files reviewed: 2/2 changed files
• Comments generated: 1
• Review effort level: Balanced