fix(primitive-author): annotate tier moves and route package config

- annotate the research Must demoted to hook Should 12; narrow Must 5 note
- extend Must 6 to scripts run via an interpreter -c string
- add a fallback dispatch row and comma-joined --target guidance
- fall back when agentsmd-author is not installed
- add the apm-workflow boundary; pin upstream apm source URL

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkT7RSDwDbmrM9T34b6sTi

plugins/kyberforge/.apm/skills/primitive-author/references/instruction.md

@@ -15,13 +15,16 @@ An instruction is a scoped rule: it applies when the agent touches files matchin
 glob. On Claude it deploys to `.claude/rules/<stem>.md` with `applyTo` renamed to `paths:`.
 
 - **A rule for this repo alone** → it belongs in the repo's AGENTS.md, which is the single
-  always-on source. Stop and hand to `agentsmd-author`.
+  always-on source. Stop and hand to `agentsmd-author`; if it is not installed, edit the repo's
+  AGENTS.md directly.
 - **No file pattern fits** → an instruction without `applyTo` is always-on in every session of
   every repo that installs this package, and `apm compile` can fold it into the global sections of
   `AGENTS.md` and `CLAUDE.md` (CLAUDE.md is skipped when `.claude/rules/` is populated, AGENTS.md
   when `.github/instructions/` is, unless `--force-instructions`). Say exactly that to the user and continue only on an explicit yes.
   Legitimate when a package deliberately ships guidance to its consumers; never a default.
 - **Procedure the agent follows step by step** → a skill. Stop and hand to `skill-author`.
+- **Which harnesses receive it, or other package config** → set by the package `apm.yml`
+  `targets:`, never by the instruction file. Stop and hand to `apm-workflow`.
 - **A rule scoped to a file pattern** → continue.
 
 ## Checklist