feat(skills): add diagnosis and design workflows

[BramVR]

What changed

• Add Matt Pocock's diagnosing-bugs workflow with its structured human feedback helper.
• Add Codex-compatible PStack architect and blast-radius workflows.
• Add PStack unslop with its original behavior unchanged.
• Include upstream attribution, MIT licenses, Codex UI metadata, references, and changelog coverage.

Why

These skills add reusable diagnosis, architecture, risk-proof, and writing workflows without tailoring them to CurveDeform or another project.

Validation

• scripts/validate-skills
• Skill Creator validation for all four skills
• Bash syntax and multiline safety test for the diagnosis helper
• AutoReview clean with no accepted or actionable findings
• TruffleHog clean

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Introduces a set of reusable “skills” (writing cleanup, bug diagnosis, blast-radius review, and architecture sketching) with UI metadata, documentation, and licenses, plus an HITL scripting template and a changelog entry.

Changes:

• Added four new skills (unslop, diagnosing-bugs, blast-radius, architect) with SKILL.md content and agents/openai.yaml interface metadata.
• Added reference templates for the architect skill and an HITL reproduction loop bash template for diagnosing-bugs.
• Added skill-local MIT LICENSE files and updated the root CHANGELOG.md.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
skills/unslop/agents/openai.yaml	Adds UI metadata and default prompt for the unslop skill.
skills/unslop/SKILL.md	Adds the unslop skill definition and rewriting guidelines.
skills/unslop/LICENSE	Adds an MIT license file for unslop.
skills/diagnosing-bugs/scripts/hitl-loop.template.sh	Adds a user-run HITL reproduction loop template script.
skills/diagnosing-bugs/agents/openai.yaml	Adds UI metadata and default prompt for the diagnosing-bugs skill.
skills/diagnosing-bugs/SKILL.md	Adds the diagnosing-bugs skill definition and workflow phases.
skills/diagnosing-bugs/LICENSE	Adds an MIT license file for diagnosing-bugs.
skills/blast-radius/agents/openai.yaml	Adds UI metadata and policy for the blast-radius skill.
skills/blast-radius/SKILL.md	Adds the blast-radius skill definition and process guidance.
skills/blast-radius/LICENSE	Adds an MIT license file for blast-radius.
skills/architect/references/runner-prompt.md	Adds the runner prompt reference used by architect candidates.
skills/architect/references/rationale-template.md	Adds the rationale template reference for design packages.
skills/architect/references/design-red-flags.md	Adds design red-flags checklist reference for screening candidates.
skills/architect/agents/openai.yaml	Adds UI metadata and policy for the architect skill.
skills/architect/SKILL.md	Adds the architect skill definition and phased design workflow.
skills/architect/LICENSE	Adds an MIT license file for architect.
CHANGELOG.md	Documents the addition of the new skills.

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