fix(kyberforge): address independent review of #154

Quote the template description so the raw scaffold is valid YAML, reject
newline-containing names in new-instructions.sh, correct the empty-compile
facts (exit 1, --clean exits 0), and finish removing commit steps from the
skill-author, agent-author and forge references. Adds regression tests.

Refs #148

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

plugins/kyberforge/.apm/skills/instructions-author/references/target-mapping.md

@@ -50,7 +50,7 @@ For Claude Code the body's first line or heading is the only descriptive text th
 - `--target claude` writes `CLAUDE.md`; Gemini writes `GEMINI.md` and `AGENTS.md`; every other target writes `AGENTS.md`.
 - Compile skips instructions already deployed natively, for Claude, Copilot and Antigravity only. With rules populated, `--target claude` exits 0, prints "produced no output files" and writes nothing. `--force-instructions` (alias `--no-dedup`) overrides.
 - Cursor, Windsurf, Kiro, Grok, Codex and OpenCode have no dedup: compile writes `AGENTS.md` that repeats rules the tool already loads natively.
-- A compile with no instruction primitives exits 0.
+- A package with no instruction primitives (skills only) makes plain `apm compile` exit 1 with "No instruction files found"; `apm compile --clean` exits 0.
 
 ## Native format facts