fix(kyberforge): fix checklist/action mixing and improve-flow source_keys gap in agent-author

The Prerequisites checklist mixed items to confirm (preconditions) with an
action to perform (capturing git log), so the following "stop and ask if
missing" gate didn't logically apply to the git-log step. The improve flow
also had no reminder to update source_keys/sources.md when an edit touches
research-sourced content, unlike the create flow's explicit step for it.

Refs #69

plugins/kyberforge/skills/agent-author/SKILL.md

@@ -56,9 +56,8 @@ Before touching the filesystem, confirm you have:
 - [ ] Root directory (plugin root, project root, or `~` for user scope)
 - [ ] Agent purpose — one sentence describing the task this agent handles
 - [ ] Trigger condition — when should the runtime delegate to this agent?
-- [ ] Capture `git log --oneline -1` now, before touching the filesystem — Step 5 needs it to verify a real commit landed
 
-If any are missing, stop and ask before proceeding.
+If any are missing, stop and ask before proceeding. Then capture `git log --oneline -1` before touching the filesystem — Step 5 needs it to verify a real commit landed.
 
 Verify `kyberforge:agent-audit` is available — it ships with the kyberforge plugin and is co-installed with this skill. If unavailable, stop and tell the user to install the kyberforge plugin before continuing.
 
@@ -233,6 +232,8 @@ Before editing, state which root causes were identified, what evidence supports
 
 Edit any file the signals point to. Generalize the fix — find the underlying gap, not the specific example that failed. For every sentence you add, ask: "Would the agent get this wrong without it?" A shorter, focused definition consistently outperforms an exhaustive one. For Copilot files, verify no Claude Code-only fields are introduced.
 
+If the edit adds or removes research-sourced content, update `source_keys` in the edited file(s) and the corresponding entry in `sources.md` per Create flow's Step 4.
+
 ### Step 5 — Validate and close
 
 Re-run the validation checklist from the create flow's Step 5 on any edited file.