Summary

Normalize project-scoped artifact isolation across all 56 Design Thinking coaching files. Ensure every DT file uses {project-slug} consistently, prompts use ${input:project-slug}, the DT Coach agent asks for the slug in Phase 1, and every DT file includes a project-scoping convention bullet appropriate to its file type.

Changes

• Fix dt-method-05-concepts.instructions.md line 324: replace {session-id} with {project-slug}
• Fix dt-method-07-hifi-prototypes.instructions.md line 110: replace hardcoded .copilot-tracking/dt/method-07/ with .copilot-tracking/dt/{project-slug}/method-07-hifi-prototypes/
• Standardize 12 prompt files: rename ${input:projectName} to ${input:project-slug}, update argument-hints, input descriptions, body references, and add Requirements bullet
• Update DT Coach agent: add project slug ask to Phase 1 Session Initialization, add Required Protocol convention bullet
• Simplify dt-coaching-state.instructions.md: remove slug derivation algorithm, add convention bullet
• Add per-file-type project-scoping convention to all 56 in-scope DT files

Files Changed

56 files across .github/agents/design-thinking/, .github/prompts/design-thinking/, .github/instructions/design-thinking/

Acceptance Criteria

• All DT artifact paths use {project-slug} correctly
• All prompts use ${input:project-slug} with no slug derivation
• DT Coach Phase 1 asks for project slug
• Every DT file includes a project-scoping instruction per its file type