Blazor Developer

STOP - Read before ANY tool call

1. Read {{GUARDRAILS_PATH}}
2. Read _shared/sdd-artifacts/SESSION.md; load session-state for $Cwd
3. If the relevant gate is not approved: STOP - ask user (pt-BR) - do NOT Write/Shell
4. SDD/develop skills: after ONE step/task, STOP session - handoff only
5. This skill body is English; user-facing prompts may be (pt-BR)

Step -1 - Gate check (report in chat before continuing)

Gate check:
[ ] guardrails.mdc read
[ ] SESSION.md read; session-state loaded
[ ] User confirmed current action (sim)
-> If any unchecked: STOP

Trigger

Use when user asks for /blazor-developer, blazor fix, or a small isolated Blazor UI implementation.

Outcome

Working Razor components and tests in the target workspace, validated with dotnet build and dotnet test, with optional handoff to /commit.

Blazor host detection

Inspect .csproj and project layout:

Also detect via _Imports.razor, App.razor, or Routes.razor.

When to escalate to SDD

Recommend sdd-spec -> sdd-plan -> sdd-develop if two or more apply: 3+ layers touched, new API contracts, cross-repo impact, 10+ files, or existing approved PLAN.

Use dotnet-developer for non-UI .NET (APIs, services, EF, messaging).

DESIGN-BRIEF acceptance

If docs/DESIGN-BRIEF.md or docs/design/DESIGN-BRIEF.md exists, treat it as the acceptance source. Map sections to Razor components/layouts; do not reinterpret visual decisions. Implement one session scope from section 10 only.

For Hybrid targets, note platform-specific constraints in section 9 of the brief.

If the task is net-new UI without a brief, recommend /impeccable shape in a new session before implementing.

Lazy-load references

Do not preload unrelated guideline trees. Load only the blazor-guidelines rows needed for the current task.

Process

Step -1b - Caveman Mode (Full cap)

1. Read {{SDD_ROOT}}/preferences.json (create { "caveman_mode": false, "caveman_level": "full" } if missing).
2. If caveman_mode is false: continue without compression.
3. If true: load {{TOOLKIT_ROOT}}/skills/_shared/caveman/CAVEMAN.md; apply Full participation cap + prefs caveman_level (Lite skills never escalate); show once: [Caveman] Modo ativo (respostas compactas, level={effective}). Digite caveman off para desativar.
4. Honor caveman on|off|status|lite|full|ultra (and stop caveman / normal mode) during the session.
5. Auto-Clarity + never-compress gates/drafts/paths per CAVEMAN.md.

Subagent-first (before implement)

Classify complexity → consult capability subagents → if medium/complex and native: spawn ≤2 children (scoped paths + receipt); trivial stays in-parent; if subagents=none or Task unavailable → fallback in-parent (never hard-fail). Load SPAWN.md + subagent-first.md; do not paste guidelines into child prompts.

0. Workspace

Confirm Blazor project markers. Identify host (WASM / Server / Hybrid). Read README.md, summarize acceptance.

1. Guidelines

Load Blazor and frontend guidelines for this task.

2. Branch

Use feature/<slug> or feat/<id>. Never commit on main/master/develop.

3. Micro-plan

Define 3-7 concrete tasks; checkpoint context at >= 40%.

4. Implement

Razor components, parameters, @bind, lifecycle. Match existing patterns (code-behind vs inline per project).

5. Tests

bUnit for component logic; Playwright for E2E when the project has E2E setup.

6. Validate

dotnet build
dotnet test

7. Handoff

Offer /commit. Do not commit automatically.

Must not

• Paste guideline packs into child prompts (pass scoped paths + require receipt only)
• Spawn children for trivial work (keep in-parent)
• Hard-fail when capability subagents is none or Task is unavailable (use fallback in-parent)
• Auto-commit or auto-PR
• Leave AI traces in code or identifiers
• Block Blazor Server UI thread with long synchronous work

Handoff