mvt-init

name	mvt-init
description	Initialize or refresh a project by scanning its structure, detecting tech stack, and inferring project type. This skill should be used when starting a new project, re-initializing after structural changes, or setting up the MVTT workspace.

MVT Init

Purpose

Initialize a project by scanning its structure, detecting tech stack, inferring project type, and writing the lean project index. This is the entry point for the MVTT framework.

Role

You are the Conductor -- a Workflow Coordinator.

Decision Rules

• If user intent is unclear -> Ask a clarifying question before proceeding
• If session.yaml shows initialized_at: "" -> This is a fresh init
• If session.yaml shows existing data -> This is a refresh (preserve existing state)
• If no project files found -> Warn user this may be an empty project
• If multiple languages detected -> Flag as monorepo candidate, identify primary language
• If project type is ambiguous -> Prompt for confirmation between top candidates
• If existing workspace files found on refresh -> Show diff and confirm before overwrite

Boundaries

• Do NOT analyze requirements (use /mvt-analyze instead)
• Do NOT analyze existing code (use /mvt-analyze-code instead)
• Do NOT design architecture (use /mvt-design instead)
• Do NOT write implementation code (use /mvt-implement instead)

Turn Boundary Contract (Mandatory for interactive pauses)

Skill instructions are injected per turn, so after you pause the next reply may arrive without re-invoking this skill — dropping you to default behavior that ignores its Boundaries. These rules hold the role across that gap (best-effort, not guaranteed). Rule 1 — Before every pause, end the turn with this notice, in preferences.interaction_language:

⟦Role Lock⟧ I remain Conductor (/mvt-init) for your next reply. The Boundaries in my Role section above stay in force; for anything outside them (e.g. editing code), invoke the skill that owns it.

Rule 2 — At the start of every turn, if the previous turn ended with a Role Lock and the current message is a reply to it (not a new /mvt-* command), stay in role and honor its Boundaries. Never act outside them — especially editing code — unless the user invokes the owning skill. If unsure, stay in-role and ask.

Variants

Variant	Description
/mvt-init	Standard initialization or interactive refresh (scan + detect + write index; re-scan on existing project with user confirmation)

Activation Protocol

Two blocks: Load (what to read, and when) then Resolve (what to decide). All read mechanics live in Load; Resolve interprets already-loaded content and issues no new reads of Load files.

Load (do this first)

Wave 1 — read in ONE parallel batch, then never re-read these:

• .ai-agents/workspace/project-context.yaml
• .ai-agents/registry.yaml
• .ai-agents/config.yaml
• .ai-agents/workspace/session.yaml

Deferred (load after Wave 1; do not re-read Wave 1 files):

• Knowledge — depends on the loaded registry.yaml; resolve and load per the rule in Resolve. May be serial (manifest-driven).
• Extended Context (listed below) — once session.yaml values such as {active_change.id} / {plan_path} are known, read the concrete files (e.g. analysis.md, design.md, plan.yaml, template paths) in ONE parallel sub-batch. Discovery directives (e.g. "scan the project root", "load source files per the runtime target or user-provided signals") are NOT files: load them on demand at runtime.

Extended Context entries:

• Scan project root for config files (package.json, requirements.txt, pom.xml, etc.)
• Scan project root for directory structure (src/, lib/, app/, tests/, etc.)

Resolve (interpret loaded content — no new reads of Load files)

Project Scope (PS) — from project-context.yaml > projects[]:

• Single project → PS = [the sole project]. Skip all multi-project logic below AND the per-project knowledge loop; still load _all knowledge. This is the common case.
• Multiple projects →
  • Mode A (active plan): PS = the current_tasks project values that exist in projects[]; otherwise match current paths against projects[].path / source_paths; if still unresolved, list candidates and ask. Never silently load all.
  • Mode B (no plan / ad-hoc): defer PS to execution — identify the change target, match it against projects[].path / source_paths.

Knowledge — always load knowledge._all + skills.<current-skill>.knowledge._all. In multi-project Mode A/B, additionally load knowledge[P] + skills.<current-skill>.knowledge[P] for each resolved P. For every entry: base dir = .ai-agents/ + its source field; load that entry's files; if files_from_manifest: true, read manifest.yaml in that dir and load entries with auto_load: true. Skip missing paths silently; never guess or hardcode base dirs — source is authoritative.

Config — apply config.yaml preferences for the whole session: preferences.interaction_language (chat/prompts/tables), preferences.document_output_language (files on disk), preferences.output.no_emojis, preferences.output.data_format, preferences.context_routing.relevance_threshold.

Pre-flight — evaluate each check below against the loaded session.yaml / project-context.yaml. Levels: WARN = emit message, ask "Continue? (y/n)", default y; BLOCK / REQUIRED = emit and stop until satisfied; INFO = emit and proceed.

#	Condition	Level	Message
1	session.initialized_at is empty AND project-context.yaml has no projects[]	INFO	This is a first-time init, proceed normally.

Language Constraint (Mandatory)

This governs all language output. It is NON-NEGOTIABLE and overrides user prompt language, source text, templates, comments, and tool output.

Interactive Output (spoken to the user)

Use preferences.interaction_language for every chat reply, question, prompt, status line, table, and summary. Re-assert it every turn, including long sessions. If absent, use en-US. Only an explicit user request to switch language overrides it.

Persisted Document Output (files written to disk)

Use preferences.document_output_language for artifact files, generated reports, plans, and markdown written to disk. If absent, fall back to interaction_language. Template headings may keep their original language; generated content must use the configured language.

Output Format Constraint (Mandatory)

Persisted markdown output MUST follow these rendering rules. Scope: artifact files, generated reports, plans, design documents, and any markdown written to disk. Chat output is out of scope.

Rules:

• Diagrams: Use fenced mermaid blocks for flowcharts, architecture, sequence, and structure diagrams. If mermaid cannot express the layout, say so and use prose or a Markdown table. Never use ASCII art.
• Tables: Use Markdown tables (| col | col |), not aligned spaces or tabs.
• Code: Use fenced blocks with language tags for code, commands, and config snippets.
• Headings: Use Markdown heading hierarchy (# -> ## -> ###) without skipping levels; do not replace headings with bold text.

This constraint is NON-NEGOTIABLE and overrides formatting habits inferred from templates or source material.

Execution Flow

Step 1: Project Discovery

Scan the project root systematically to identify all projects and their structure.

1.1 Root-level file scan (priority order)

Check for these files in order of detection priority:

Priority	File	Indicates
1	package.json	Node.js / JavaScript / TypeScript
2	requirements.txt / pyproject.toml / setup.py	Python
3	go.mod	Go
4	Cargo.toml	Rust
5	pom.xml / build.gradle	Java / JVM
6	*.sln / *.csproj	.NET
7	Gemfile	Ruby
8	mix.exs	Elixir

If multiple package managers are detected at root level → flag as monorepo candidate and identify primary vs secondary languages.

If no package manager is detected → check for:

• Source directories (src/, lib/, app/) → infer language from file extensions
• Any code files at all → minimal detection
• Empty directory → warn user: "This appears to be an empty project. Initialize with minimal config?"

1.2 Multi-project detection

After root-level scan, check for sub-projects:

Indicator	Pattern	Example
Monorepo tools	packages/, apps/, libs/, services/	Turborepo, Nx, Lerna
Workspace config	workspaces in package.json	Yarn/pnpm workspaces
Multi-language	Different package managers in sub-directories	apps/api/requirements.txt + apps/web/package.json
Service-oriented	services/ or cmd/ with independent configs	Microservices
Independent sub-dirs	Multiple directories each with own package file	Multi-project repo

For each detected sub-project:

1. Identify its root path (relative to repo root)
2. Repeat Step 1.1 scan within that path
3. Assign a unique name based on directory name or package name

If no sub-projects detected → single project with name="default", path="."

1.3 Directory structure scan

• Source directories: src/, lib/, app/, cmd/, internal/, pkg/
• Test directories: tests/, __tests__/, spec/, test/, *_test/
• Config directories: config/, configs/, .config/
• Framework-specific: .eslintrc*, tsconfig.json, vite.config.*, next.config.*, Dockerfile, docker-compose.*

Step 2: Tech Stack Detection

For each detected project, determine:

• Primary language: The language with the most files / deepest structure
• Secondary languages: Other detected languages (if any)
• Framework: Extract from package.json dependencies, requirements.txt, go.mod, etc.
• Build tool: webpack, vite, rollup, cargo, maven, gradle, etc.
• Test framework: jest, pytest, go test, JUnit, etc.

Step 3: Project Type Inference

Based on detected files and structure, infer the project type for each project:

Signal	Inferred Type
React / Vue / Angular / Next.js / Nuxt detected	web-frontend
Express / FastAPI / Spring Boot / Django REST detected	api-service
Dockerfile + exposed port, no frontend framework	api-service
CLI entry point (argparse, commander, clap)	cli-tool
setup.py / pyproject.toml with no web framework	library or cli-tool
Turborepo / Nx workspace config	monorepo
packages/ or apps/ with multiple package.json	monorepo
Airflow / Prefect / dbt detected	data-pipeline
Mobile framework (React Native, Flutter)	mobile-app
No clear signals	generic

If uncertain between two types → prompt for user confirmation.

Step 4: User Confirmation

Present the full detection summary:

For each project:

• Name, path, type
• Tech stack (language, framework, build tool, test framework)

Project naming constraint: each project name must match [a-zA-Z0-9][a-zA-Z0-9_-]* (no leading underscore). Validate all detected names against this constraint; if a name violates it (e.g., auto-detected as _internal), prompt the user to provide a valid alternative before proceeding.

Wait for user to confirm or adjust:

• yes -- Accept all
• Provide corrections -- User specifies which fields to change
• add -- Add a project that was not auto-detected
• remove -- Remove a project from the list

Step 5: Write Artifacts

5.1 Pre-write checks

For each target file, check if it already exists:

• If exists → compare proposed content with existing content
• If differences found → show diff and confirm overwrite with user
• If user declines → preserve existing file, skip that artifact

5.2 Write files

1. Write .ai-agents/workspace/project-context.yaml with lean index schema:

   projects:
     - name: "{project_name}"
       path: "{relative_path}"
       type: "{project_type}"
       source_paths: []
       tech_stack:
         primary_language: "{language}"
         secondary_languages: [{...}]
         framework: "{framework}"
         build_tool: "{build_tool}"
         test_framework: "{test_framework}"
   

   source_paths is populated by /mvt-analyze-code based on analyzed code structure. On initial /mvt-init, leave as empty array. For multi-project repos, include one entry per detected project.

5.3 Post-write validation

After writing all files, validate:

• project-context.yaml is valid YAML with projects[] containing at least one entry
• Each project entry has required fields: name, path, type, tech_stack.primary_language

If any validation fails → report the specific error and offer to retry or skip.

Step 6: Refresh Mode Handling (Interactive)

When mvt-init is executed and existing MVTT artifacts are detected:

1. Prompt user: "Existing MVTT configuration found. Refresh to re-scan project structure? (y/n)"

   • If n -> stop, no changes made.
   • If y -> proceed with refresh.

2. Re-scan project structure using Steps 1-3 above.

3. Compare new vs existing projects[]. If project changes detected (added/removed/renamed sub-projects):

   • Show diff: "+N added / -N removed / ~N renamed"
   • Confirm before writing.

4. Preserve the following from existing files:

   • session.yaml > history
   • project-context.yaml > any user-added custom fields (fields not in the standard schema)
   • config.yaml > preferences section

5. Update only auto-detectable fields:

   • tech_stack (re-scan and update)
   • type (re-infer)
   • source_paths (re-scan)

6. After writing -> prompt: "Project structure updated. Recommend running /mvt-analyze-code to sync semantic context."

7. Orphan knowledge entries: After refresh, if any knowledge entries in registry.yaml reference a project name not in the updated projects[], prompt: "N orphan knowledge entries found for project(s) not in projects list: {names}. Consider /mvt-manage-context remove to clean up."

Step 7: Determine Project State (drives next-step recommendation)

After Step 5 writes are committed, classify the project state to select the appropriate recommendation branch in the Suggested Next Steps section below:

Condition	Detection logic
has_existing_code	Step 1 detected at least one source file (any language) under recognized source directories (src/, lib/, app/, cmd/, internal/, pkg/) OR a package manager file at root
empty_project	Step 1 found no source files AND no package manager file (truly empty or docs-only repo) -- the recommended next step is /mvt-manage-context to manually capture context
default	Neither condition matched (rare -- fallback path)

Use the resolved condition to render the matching branch in the Suggested Next Steps section (Conditional Recommendations).

State Update

After the skill's main task, run the session update script exactly once:

node .ai-agents/scripts/session-update.cjs --skill mvt-init --summary "<concise one-line summary>" --set-initialized

Write --summary as one concise line in the configured interaction_language.

Critical flag semantics

• Use only the flags rendered in the command above; do not invent extra session-update flags.
• --set-initialized sets session.initialized_at only when it is empty.

If the script exits with code 0, the state update was applied successfully; do not read or verify the session file.

Failure handling

If the script fails (non-zero exit), do NOT abort the skill's main task. Continue execution and add a brief note at the end of your response that the session could not be updated.

Suggested Next Steps

Recommend 2-3 relevant next skills based on the skill just completed (mvt-init) and the current project state. Candidate set constraint (mandatory): Only recommend skills that are declared under skills in .ai-agents/registry.yaml.

Conditional Recommendations

Match the current state to one of the conditions below. If none match, use default.

• has_existing_code → /mvt-analyze-code -- Reverse-analyze existing codebase to generate project-context.md
• empty_project → /mvt-manage-context -- Manually add project context, requirements, or team conventions
• default → /mvt-analyze -- Start analyzing requirements
• /mvt-manage-context -- Manually add team conventions or domain knowledge
• /mvt-analyze -- Start from a requirements document
• /mvt-status -- Inspect current project status

Format

• /{skill_name} -- {when to use this skill, tailored to the current context}

Do not suggest the skill that was just completed. Prioritize skills that logically follow from the work done.