[model-inventory] Add missing Copilot pricing entries for gpt-5.6 variants

[Copilot]

Daily model inventory reported pricing gaps for three live Copilot models (gpt-5.6-luna, gpt-5.6-sol, gpt-5.6-terra) while alias coverage was already complete. This updates the pricing catalog so billing/AIC calculations include those models.

• Catalog updates (CLI + setup mirror)

  • Added github-copilot entries for:
    • gpt-5.6-luna
    • gpt-5.6-sol
    • gpt-5.6-terra
  • Applied the same additions in both mirrored sources:
    • pkg/cli/data/models.json
    • actions/setup/js/models.json

• Pricing + wire metadata

  • Set per-token costs from the issue’s proposed pricing conversion:
    • luna: input 1e-06, output 6e-06, cache_read 1e-07
    • sol: input 5e-06, output 3e-05, cache_read 5e-07
    • terra: input 2.5e-06, output 1.5e-05, cache_read 2.5e-07
  • Kept provider/wire behavior aligned with existing Copilot GPT-5.x entries:
    • provider_type: "openai"
    • wire_api: "responses"

"gpt-5.6-terra": {
  "cost": {
    "input": "2.5e-06",
    "output": "1.5e-05",
    "cache_read": "2.5e-07"
  },
  "provider_type": "openai",
  "wire_api": "responses"
}

[Copilot]

Pull request overview

This pull request closes reported pricing gaps by adding explicit github-copilot catalog entries for three live Copilot models (gpt-5.6-luna, gpt-5.6-sol, gpt-5.6-terra) so that billing / AI Credits (AIC) cost calculations can resolve per-token rates from the embedded catalog instead of falling back to “unknown model” behavior.

Changes:

• Added per-token cost records for gpt-5.6-luna, gpt-5.6-sol, and gpt-5.6-terra under the github-copilot provider catalog.
• Mirrored the same pricing and wire metadata into both the CLI-embedded catalog and the runtime setup-action mirror.

Show a summary per file

File	Description
pkg/cli/data/models.json	Adds missing github-copilot pricing entries for the three gpt-5.6-* variants so CLI/runtime cost accounting can resolve them from the embedded catalog.
actions/setup/js/models.json	Mirrors the same new github-copilot model pricing entries for the runtime actions/setup catalog to keep catalogs in sync.

Review details

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• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Low

[github-actions]

🎉 This pull request is included in a new release.

Release: v0.82.8