Fix README links, add missing skills, correct invocation classification

- Fixed 3 broken links in root and common READMEs (pkm-curation,
  forge-interaction, forge-preferences were pointing to wrong buckets)
- Moved project-context-pack from model-invoked to user-invoked
  (matches its disable-model-invocation: true flag)
- Added 8 missing user-invoked and 6 missing model-invoked skills
  to root and common READMEs
- Added all 9 engineering skills to engineering README
  (was missing codebase-design, domain-modeling, resolving-merge-conflicts,
  tdd, grill-with-docs, improve-codebase-architecture, setup-skills,
  to-issues, to-prd, triage)
- Added pkm-curation to pkm README
- Updated personal README to note both skills moved elsewhere
- Added all forge skills to deprecated README
- Added .gitignore for docs/adr/
- Added docs/agents/ reference files
- Added project context cache

README.md

@@ -7,17 +7,34 @@ A collection of agent skills (slash commands and behaviors) loaded into Steve Be
 - [conversation-summary](common/pkm/conversation-summary/SKILL.md) — Summarize the current AI conversation into a new Obsidian markdown note and matching transcript file.
 - [crit](common/pkm/crit/SKILL.md) — Brainstorm with AI using the CRIT framework to generate and evaluate ideas.
 - [grill-me](common/productivity/grill-me/SKILL.md) — A relentless interview to sharpen a plan or design.
+- [grill-with-docs](common/engineering/grill-with-docs/SKILL.md) — A relentless interview to sharpen a plan or design, which also creates docs (ADRs and glossary) as we go.
 - [handoff](common/productivity/handoff/SKILL.md) — Compact the current conversation into a handoff document for another agent to pick up.
+- [improve-codebase-architecture](common/engineering/improve-codebase-architecture/SKILL.md) — Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.
 - [knowledge-gardener](common/pkm/knowledge-gardener/SKILL.md) — Run vault-aware semantic search, synthesis, note creation, linking, and Zettelkasten workflows for this Obsidian vault.
-- [pkm-curation](common/personal/pkm-curation/SKILL.md) — Curate an Obsidian-style personal knowledge vault.
-- [research-vault](common/pkm/research-vault/SKILL.md) — Research a topic through a one-question-at-a-time learning conversation and save a linked Obsidian research packet.
+- [pkm-curation](common/pkm/pkm-curation/SKILL.md) — Curate an Obsidian-style personal knowledge vault by classifying notes, normalizing frontmatter, improving structure, extracting atomic notes, and adding meaningful wikilinks.
+- [project-context-pack](common/engineering/project-context-pack/SKILL.md) — Build and refresh a bounded repo context memory file so agents use disciplined search instead of repeated browsing.
+- [research-vault](common/pkm/research-vault/SKILL.md) — Research a topic through a one-question-at-a-time learning conversation, answer directly, share resources when useful, and save a linked Obsidian research packet.
+- [setup-skills](common/engineering/setup-skills/SKILL.md) — Configure this repo for the engineering skills, set up its issue tracker, triage label vocabulary, and domain doc layout.
+- [to-issues](common/engineering/to-issues/SKILL.md) — Break a plan, spec, or PRD into independently-grabbable issues on the project issue tracker using tracer-bullet vertical slices.
+- [to-prd](common/engineering/to-prd/SKILL.md) — Turn the current conversation into a PRD and publish it to the project issue tracker — no interview, just synthesis of what you've already discussed.
+- [triage](common/engineering/triage/SKILL.md) — Move issues and external PRs through a state machine of triage roles — categorise, verify, grill if needed, and write agent-ready briefs.
 - [writing-great-skills](common/productivity/writing-great-skills/SKILL.md) — Reference for writing and editing skills well — the vocabulary and principles that make a skill predictable.
 
+**Deprecated / user-invoked:**
+- [forge-router](common/deprecated/forge-router/SKILL.md) — High-level guidance for choosing the right forge skill.
+
 ## Model-invoked
 
-- [audio-product-dsp](common/deprecated/audio-production-dispatcher/SKILL.md) — Dispatch audio product DSP hardware/software engineering requests to the best specialist workflow with measurable product-focused outputs.
-- [forge-interaction](common/engineering/forge-interaction/SKILL.md) — Work safely with GitHub and Gitea repositories, issues, pull requests, releases, and remote forge state.
-- [forge-preferences](common/personal/forge-preferences/SKILL.md) — Apply Steve's personal or project-specific GitHub/Gitea forge preferences.
+- [codebase-design](common/engineering/codebase-design/SKILL.md) — Shared vocabulary for designing deep modules.
+- [domain-modeling](common/engineering/domain-modeling/SKILL.md) — Build and sharpen a project's domain model.
 - [grilling](common/productivity/grilling/SKILL.md) — Interview the user relentlessly about a plan or design.
-- [project-context-pack](common/engineering/project-context-pack/SKILL.md) — Build and refresh a bounded repo context memory file so agents use disciplined search instead of repeated browsing.
-- [research-engineering](common/deprecated/dsp-research-dispatcher/SKILL.md) — Route DSP hardware and software research-engineering requests to the best specialist workflow and return a unified, decision-ready output.
+- [resolving-merge-conflicts](common/engineering/resolving-merge-conflicts/SKILL.md) — Resolve an in-progress git merge/rebase conflict.
+- [tdd](common/engineering/tdd/SKILL.md) — Test-driven development.
+
+**Deprecated / model-invoked:**
+- [audio-product-dsp](common/deprecated/audio-production-dispatcher/SKILL.md) — Dispatch audio product DSP hardware/software engineering requests to the best specialist workflow with measurable product-focused outputs.
+- [dsp-research-engineering](common/deprecated/dsp-research-dispatcher/SKILL.md) — Route DSP hardware and software research-engineering requests to the best specialist workflow and return a unified, decision-ready output.
+- [forge-gitea](common/deprecated/forge-gitea/SKILL.md) — Work with Gitea repositories, issues, pull requests, releases, and CI.
+- [forge-github](common/deprecated/forge-github/SKILL.md) — Work with GitHub repositories, issues, pull requests, releases, and CI.
+- [forge-interaction](common/deprecated/forge-interaction/SKILL.md) — Work safely with GitHub and Gitea repositories, issues, pull requests, releases, and remote forge state.
+- [forge-preferences](common/deprecated/forge-preferences/SKILL.md) — Apply Steve's personal or project-specific GitHub/Gitea forge preferences.