feat(kyberforge): add instructions-author skill for .apm/instructions files

Scaffolds and revises apm instructions files, with a throwaway-package
verification recipe because `apm compile --validate` always exits 0 and
Claude Code drops `description`. Routed from forge and linked from
apm-workflow's compile reference. Bumps kyberforge to 2.1.0 and the catalog
to 0.5.2.

Fixes #148

Co-Authored-By: Claude Code <[email protected]>
Claude-Session: https://claude.ai/code/session_01KkT7RSDwDbmrM9T34b6sTi

plugins/kyberforge/.apm/skills/forge/SKILL.md

@@ -23,7 +23,7 @@ Call `grill-with-docs` unless a grill session has already run and is available i
 
 `grill-with-docs` ships in a sibling plugin kyberforge does not declare as an apm dependency, so it can be absent where kyberforge is installed alone. If it does not resolve, grill inline yourself rather than skipping the step: what problem the artifact solves, who invokes it and how, what it must refuse, and which existing skill or plugin already owns part of the job. Say which path you took.
 
-Grilling regularly overturns the artifact type assumed at the start, or splits one idea into several artifacts, so it runs before classification rather than confirming it. Run it inline in the current conversation — grilling is interactive and a subagent cannot hold the back-and-forth.
+Grilling often overturns the assumed artifact type or splits one idea into several, so it runs before classification. Run it inline: a subagent cannot hold the back-and-forth.
 
 ## Step 2 — Classify and dispatch
 
@@ -33,6 +33,7 @@ Match the grilled intent against exactly one row — or more than one, if the in
 |---|---|---|---|
 | A reusable capability the agent loads inline in the main conversation, triggered by description-matching, free to bundle its own `references/`, `scripts/` or `assets/` | Skill | `skill-author` | `references/author-routes.md` |
 | A recurring task needs its own reusable definition — dedicated system prompt, tools and description, invokable by name across sessions | Agent / subagent | `agent-author` | `references/author-routes.md` |
+| Always-on or path-scoped agent guidance in `.apm/instructions/*.instructions.md` | Instructions file | `instructions-author` | `references/author-routes.md` |
 | A new distributable unit — no existing plugin is the right home for the skill, agent, hook or MCP server being built, or the bundle needs its own manifest, versioning and install lifecycle | Plugin | `apm-workflow` (`apm plugin init`) | `references/apm-routes.md` |
 | The plugin already exists and only its marketplace-facing metadata changes — a first listing, or a version/description update, never the plugin's contents | Marketplace entry | `apm-workflow` (`apm marketplace package add`) | `references/apm-routes.md` |
 
@@ -47,4 +48,4 @@ When the intent spans several rows, chain the routes in dependency order — an
 ## Step 3 — Closing gates, common to every route
 
 - **Resolve before closing.** A route is finished only when its verification reports nothing unresolved. An actionable finding reopens the route; it is never reported onward as a caveat.
-- **Bump the package version.** A skill route always lands here: `skill-author` moves only a skill's own `metadata.version`, which is not the package `apm.yml`'s number — so read `references/version-bump.md` after one. `agent-author` and the apm routes bump the package themselves at plugin scope; after those, read it only when their output does not say they did.
+- **Bump the package version.** A skill route always lands here: `skill-author` moves only a skill's own `metadata.version`, which is not the package `apm.yml`'s number — so read `references/version-bump.md` after one. `agent-author`, `instructions-author` and the apm routes bump the package themselves at plugin scope; after those, read it only when their output does not say they did.