🛠️ Update various documentation, scripts, and configuration templates to enhance clarity, functionality, and maintainability across the project

resources/skills/copilot-cost-review/SKILL.md

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+---
+name: copilot-cost-review
+description: "Use when reviewing a prompt, instruction, agent, or skill draft for avoidable token cost and reuse opportunities."
+argument-hint: "target=<resource path or description>"
+---
+
+# Copilot Cost Review
+
+Use this skill when you want to make a Copilot resource cheaper to run without
+stripping away the behavior it actually needs.
+
+## Procedure
+
+1. Identify the resource's real job, expected inputs, and default output size.
+2. Search for an existing shared resource that already covers most of the same
+   workflow before proposing a new artifact.
+3. Re-evaluate the primitive choice: use an instruction for durable rules, a
+   skill for a portable workflow, a prompt for a thin VS Code entrypoint, and a
+   hook only for deterministic enforced behavior.
+4. Remove repeated policy text, long examples, and broad workspace-reading
+   requirements unless they materially improve correctness.
+5. Replace broad discovery steps with narrow anchors such as a file, symbol,
+   command, or manifest row whenever possible.
+6. Add or tighten an explicit output budget and note when the resource should
+   not be used.
+7. If the resource is still too heavy, split reference material into docs or
+   scripts and keep the runtime resource concise.
+
+## Outputs
+
+- Recommended primitive
+- Reuse candidates in the shared repo
+- Context and prompt reductions
+- Output-budget guidance
+- Non-goals or usage limits
+
+## Notes
+
+- Reduce prompt size without removing information that changes correctness.
+- Treat transcript prompt-cost fields as proxies, not exact billing data.