Narrow 0.144 hotfix to GPT-5.6 prompts and context

[sayan-oai]

Summary

• Keep the refreshed bundled prompts for GPT-5.6 Sol, Terra, and Luna.
• Keep the 272,000-token context and maximum context windows for those three models.
• Revert the unrelated model-catalog metadata changes introduced by Backport refreshed bundled model metadata to 0.144 #33972.

Why

#33972 backported a broader generated catalog refresh than this stable hotfix needs. The intended 0.144.6 change is limited to the GPT-5.6 Sol/Terra/Luna prompt refresh and their corrected context-window metadata.

This follow-up restores all other catalog values to the last-green release/0.144 baseline. In particular, it removes fields that 0.144 does not understand, restores the existing skills-guidance settings and GPT-5.5 availability NUX, and leaves model visibility and upgrade behavior unchanged.

Relative to 215fb464f1932b5fd7beb5d4615bc1927d80fbf7, the resulting catalog differs in exactly 12 values: base_instructions, model_messages.instructions_template, context_window, and max_context_window for each of GPT-5.6 Sol, Terra, and Luna.

Validation

• just test -p codex-models-manager bundled_models_json_roundtrips
• just fmt
• jq empty codex-rs/models-manager/models.json
• git diff --check
• Verified the semantic diff against 215fb464f1932b5fd7beb5d4615bc1927d80fbf7 contains only the intended 12 values.
• Verified all retained values exactly match d26a9bf671b1c03aabfc32e1092d137c1feb3962.

[chatgpt-codex-connector]

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