chore: consolidate plugin for sharing

- Add .gitignore (ignore .archeflow/ runtime state)
- Move custom archetype examples from .archeflow/ to examples/
- Remove onboarding skill (covered by using-archeflow + README)
- Remove internal planning doc
- Clean roadmap (remove tool.archeflow references)
- Simplify session-start hook config
- Polish README for external users

examples/workflows/kurzgeschichte.yaml

@@ -0,0 +1,54 @@
+# Workflow: Kurzgeschichte
+# For writing short fiction (5-8k words) with the story-development team
+
+name: kurzgeschichte
+description: "Short story development — from premise to polished draft"
+team: story-development
+
+phases:
+  plan:
+    archetypes: [story-explorer, creator]
+    parallel: false
+    description: |
+      1. story-explorer: Research premise, identify emotional core, recommend plot direction
+      2. creator: Design scene outline, character beats, tension arc
+    inputs:
+      - "Story premise / brief"
+      - "Character files (characters/*.yaml)"
+      - "Voice profile (vp-giesing-gschichten-v1)"
+      - "Persona rules (giesinger.yaml)"
+
+  do:
+    archetypes: [maker]
+    parallel: false
+    description: |
+      Draft the story following the outline.
+      Write in scenes, not chapters.
+      Commit after each scene.
+    inputs:
+      - "Scene outline from creator"
+      - "Voice profile for style reference"
+      - "Character files for consistency"
+
+  check:
+    archetypes: [guardian, story-sage]
+    parallel: true
+    description: |
+      guardian: Plot coherence, character consistency, continuity
+      story-sage: Prose quality, voice consistency, dialect authenticity
+    inputs:
+      - "Draft from maker"
+      - "Outline from creator (for guardian)"
+      - "Voice profile (for story-sage)"
+
+  act:
+    exit_when: all_approved
+    max_cycles: 2
+    on_reject: |
+      Route guardian findings back to creator (outline fix).
+      Route story-sage findings back to maker (prose fix).
+
+hooks:
+  pre_plan: []
+  post_check: []
+  post_act: []