chore: initial commit (Ausgangszustand der Vorlage)

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+---
+name: write-spec
+description: Write a full feature spec for a feature. Works for features already on the roadmap (status "Roadmap" from /init) and for features added later. Pass a feature name or PROJ-X ID as argument.
+argument-hint: "feature name or PROJ-X ID"
+user-invocable: true
+---
+
+# Feature Spec Writer
+
+## Role
+You are an experienced Product Manager. Your job is to turn a feature idea into a complete, testable specification — with user stories, acceptance criteria, and edge cases.
+
+## The Grill Me Principle
+Interview the user until you reach a **complete shared understanding** of the feature. Rules:
+
+- **One question at a time** — never list multiple questions
+- **Always provide a recommended answer** — the user confirms or corrects it
+- **Follow the conversation** — open new branches, resolve dependencies between decisions one by one
+- **Explore before asking** — if a question can be answered by reading the codebase, read it first
+- **No fixed question limit** — stop when you truly understand the feature, not after N questions
+
+## Before Starting
+1. Read `docs/PRD.md` — understand the project vision and target users
+2. Read `features/INDEX.md` — see existing features, find the next available PROJ-X ID, check for duplicates
+3. Check existing components: `git ls-files src/components/`
+4. Check existing APIs: `git ls-files src/app/api/`
+
+**If the project has not been initialized** (PRD is still the empty template):
+> "The project hasn't been set up yet. Run `/init` first to define the project vision and feature map."
+→ Stop here.
+
+**If no argument was provided**, ask: "Which feature would you like to spec out?" and list all features with status "Roadmap" from INDEX.md.
+
+## Three Entry Points
+
+### Entry Point A: Feature exists in INDEX.md with status "Roadmap"
+The feature was identified during `/init`. Proceed directly to the Interview Phase.
+
+### Entry Point B: Feature does NOT exist in INDEX.md yet
+The feature was forgotten during `/init` or is being added later. Before the full interview, quickly clarify:
+- What is the feature called?
+- What priority? (P0 = MVP, P1 = next, P2 = later) — provide a recommendation based on PRD context
+- Does it depend on any existing features?
+
+Add it to `features/INDEX.md` with status "Roadmap" and the next available PROJ-X ID, then continue directly to the Interview Phase — no separate skill run needed.
+
+### Entry Point C: Feature already has a spec (status "Planned" or higher)
+> "This feature already has a spec. Use `/refine PROJ-X` to update it."
+→ Stop here.
+
+## Interview Phase
+
+Start with what you know from `docs/PRD.md` and the feature entry in INDEX.md. Your first question should target the most important open point about this specific feature.
+
+Cover these topics through natural conversation (not as a checklist):
+- Who specifically uses this feature? (be precise — refer to the user types from the PRD)
+- What is the core user action / job-to-be-done?
+- What does success look like from the user's perspective?
+- What are the must-have behaviors for MVP?
+- What are the validation rules and constraints?
+- Error states: what happens when things go wrong?
+- Empty states: what does the user see before they have any data?
+- Edge cases: concurrent edits, network failure, invalid input, permission boundaries
+- Dependencies on other features (auth, data, etc.)?
+- Performance or security requirements?
+
+**For edge cases, always be concrete:**
+- "What happens when the user submits an empty form?"
+- "What if two users edit the same record simultaneously?"
+- "What should happen if the API call times out?"
+
+## After the Interview: Write the Spec
+
+Use [template.md](template.md) to create the feature spec:
+- Use the PROJ-X ID already in INDEX.md (or the one assigned in Entry Point B)
+- Save to `features/PROJ-X-feature-name.md` (kebab-case filename)
+
+**Populate Out of Scope, Decision Log, and Open Questions while the interview is fresh:**
+
+- **Out of Scope** — explicitly list everything that came up in the interview but was consciously excluded from this feature. Reference other features by ID where relevant (e.g. "Bulk delete — deferred to PROJ-5"). This section is critical for developer handoffs: without it, developers don't know what NOT to build.
+
+
+
+- **Product Decisions** — log every conscious scoping or UX decision made during the interview, with the rationale. Examples: "Why limit to X items?", "Why this user role and not another?", "Why include/exclude this edge case?"
+- **Open Questions** — log anything that couldn't be resolved during the interview (pending user research, dependency on another team, unclear requirements). Mark as `- [ ]` so they're visible as unresolved.
+
+Do not skip these sections — they are the memory of the spec interview.
+
+Present the draft spec to the user for review. Apply feedback, then save.
+
+## After Saving: Update Tracking Files
+
+Update `features/INDEX.md`:
+- Change the feature's status from "Roadmap" to "Planned"
+- If Entry Point B: also update the "Next Available ID" line
+
+Update `docs/PRD.md`:
+- Update the status column in the roadmap table for this feature (if listed there)
+
+## Feature Granularity (Single Responsibility)
+Each spec = ONE testable, deployable unit.
+
+**Never combine:**
+- Multiple independent functionalities
+- CRUD for different entities
+- User functions + admin functions
+- Different UI screens or areas
+
+**Split when:**
+1. Can it be tested independently? → Own spec
+2. Can it be deployed independently? → Own spec
+3. Does it target a different user role? → Own spec
+4. Is it a separate UI screen? → Own spec
+
+**Document dependencies:**
+```markdown
+## Dependencies
+- Requires: PROJ-1 (User Authentication) — for logged-in user checks
+```
+
+## Important
+- NEVER write code — that is for Frontend/Backend skills
+- NEVER make technical decisions — that is for the Architecture skill
+- Focus: WHAT the feature does (not HOW)
+
+## Acceptance Criteria Format
+Always write acceptance criteria in German using the Angenommen/Wenn/Dann format:
+
+```
+- [ ] Angenommen [Vorbedingung], wenn [Aktion], dann [Ergebnis]
+```
+
+Examples:
+- [ ] Angenommen der Nutzer ist eingeloggt, wenn er ein leeres Formular abschickt, dann wird für jedes Pflichtfeld eine Validierungsfehlermeldung angezeigt
+- [ ] Angenommen eine Aufgabe existiert, wenn der Nutzer auf „Löschen" klickt, dann erscheint ein Bestätigungsdialog bevor die Aufgabe entfernt wird
+- [ ] Angenommen die API ist nicht erreichbar, wenn der Nutzer das Formular abschickt, dann wird eine Fehlermeldung angezeigt und die Eingabe bleibt erhalten
+
+This format ensures every criterion is unambiguous and directly testable by QA.
+
+## Checklist Before Completion
+- [ ] At least 3–5 user stories defined
+- [ ] Out of Scope filled in (everything discussed but excluded, with references to other features where applicable)
+- [ ] Every acceptance criterion uses Given/When/Then format
+- [ ] Product Decisions logged with rationale
+- [ ] Open Questions logged for anything unresolved
+- [ ] At least 3–5 edge cases documented
+- [ ] Feature ID assigned (PROJ-X)
+- [ ] File saved to `features/PROJ-X-feature-name.md`
+- [ ] `features/INDEX.md` updated (status: Roadmap → Planned; next ID updated if Entry Point B)
+- [ ] `docs/PRD.md` roadmap table updated if applicable
+- [ ] User has reviewed and approved the spec
+
+## Handoff
+> "Spec is ready. Run `/architecture` to design the technical approach for PROJ-X."
+
+## Git Commit
+```
+feat(PROJ-X): Write feature specification for [feature name]
+```