feat(pitch-deck): full pitch versioning with git-style history (#4)

Full pitch versioning: 12 data tables versioned as JSONB snapshots,
git-style parent chain (draft→commit→fork), per-investor assignment,
side-by-side diff engine, version-aware /api/data + /api/financial-model.

Bug fixes: FM editor [object Object] for JSONB arrays, admin scroll.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pitch-deck/migrations/000_pitch_data_tables.sql

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+-- =========================================================
+-- Pitch Deck: Core data tables + Financial Model
+-- Run BEFORE 001_investor_auth.sql
+-- =========================================================
+
+-- Company info
+CREATE TABLE IF NOT EXISTS pitch_company (
+  id SERIAL PRIMARY KEY,
+  name TEXT,
+  legal_form TEXT,
+  founding_date TEXT,
+  tagline_de TEXT,
+  tagline_en TEXT,
+  mission_de TEXT,
+  mission_en TEXT,
+  website TEXT,
+  hq_city TEXT
+);
+
+-- Team members
+CREATE TABLE IF NOT EXISTS pitch_team (
+  id SERIAL PRIMARY KEY,
+  name TEXT,
+  role_de TEXT,
+  role_en TEXT,
+  bio_de TEXT,
+  bio_en TEXT,
+  equity_pct NUMERIC,
+  expertise TEXT[],
+  linkedin_url TEXT,
+  photo_url TEXT,
+  sort_order INT DEFAULT 0
+);
+
+-- Historical financials
+CREATE TABLE IF NOT EXISTS pitch_financials (
+  id SERIAL PRIMARY KEY,
+  year INT,
+  revenue_eur BIGINT,
+  costs_eur BIGINT,
+  mrr_eur BIGINT,
+  burn_rate_eur BIGINT,
+  customers_count INT,
+  employees_count INT,
+  arr_eur BIGINT
+);
+
+-- Market segments (TAM/SAM/SOM)
+CREATE TABLE IF NOT EXISTS pitch_market (
+  id SERIAL PRIMARY KEY,
+  market_segment TEXT,
+  label TEXT,
+  value_eur BIGINT,
+  growth_rate_pct NUMERIC,
+  source TEXT
+);
+
+-- Competitors
+CREATE TABLE IF NOT EXISTS pitch_competitors (
+  id SERIAL PRIMARY KEY,
+  name TEXT,
+  customers_count INT,
+  pricing_range TEXT,
+  strengths TEXT[],
+  weaknesses TEXT[],
+  website TEXT
+);
+
+-- Feature comparison matrix
+CREATE TABLE IF NOT EXISTS pitch_features (
+  id SERIAL PRIMARY KEY,
+  feature_name_de TEXT,
+  feature_name_en TEXT,
+  category TEXT,
+  breakpilot BOOLEAN,
+  proliance BOOLEAN,
+  dataguard BOOLEAN,
+  heydata BOOLEAN,
+  is_differentiator BOOLEAN,
+  sort_order INT DEFAULT 0
+);
+
+-- Milestones / timeline
+CREATE TABLE IF NOT EXISTS pitch_milestones (
+  id SERIAL PRIMARY KEY,
+  milestone_date TEXT,
+  title_de TEXT,
+  title_en TEXT,
+  description_de TEXT,
+  description_en TEXT,
+  status TEXT,
+  category TEXT,
+  sort_order INT DEFAULT 0
+);
+
+-- Key metrics
+CREATE TABLE IF NOT EXISTS pitch_metrics (
+  id SERIAL PRIMARY KEY,
+  metric_name TEXT,
+  label_de TEXT,
+  label_en TEXT,
+  value TEXT,
+  unit TEXT,
+  is_live BOOLEAN
+);
+
+-- Funding round
+CREATE TABLE IF NOT EXISTS pitch_funding (
+  id SERIAL PRIMARY KEY,
+  round_name TEXT,
+  amount_eur BIGINT,
+  use_of_funds JSONB,
+  instrument TEXT,
+  target_date TEXT,
+  status TEXT
+);
+
+-- Products / tiers
+CREATE TABLE IF NOT EXISTS pitch_products (
+  id SERIAL PRIMARY KEY,
+  name TEXT,
+  hardware TEXT,
+  hardware_cost_eur NUMERIC,
+  monthly_price_eur NUMERIC,
+  llm_model TEXT,
+  llm_size TEXT,
+  llm_capability_de TEXT,
+  llm_capability_en TEXT,
+  features_de TEXT[],
+  features_en TEXT[],
+  is_popular BOOLEAN,
+  operating_cost_eur NUMERIC,
+  sort_order INT DEFAULT 0
+);
+
+-- =========================================================
+-- Financial Model
+-- =========================================================
+
+CREATE TABLE IF NOT EXISTS pitch_fm_scenarios (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  name TEXT,
+  description TEXT,
+  is_default BOOLEAN DEFAULT false,
+  color TEXT DEFAULT '#6366f1',
+  sort_order INT DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS pitch_fm_assumptions (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  scenario_id UUID REFERENCES pitch_fm_scenarios(id) ON DELETE CASCADE,
+  key TEXT,
+  label_de TEXT,
+  label_en TEXT,
+  value JSONB,
+  value_type TEXT DEFAULT 'scalar',
+  unit TEXT,
+  min_value NUMERIC,
+  max_value NUMERIC,
+  step_size NUMERIC,
+  category TEXT,
+  sort_order INT DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS pitch_fm_results (
+  id SERIAL PRIMARY KEY,
+  scenario_id UUID REFERENCES pitch_fm_scenarios(id) ON DELETE CASCADE,
+  month INT,
+  year INT,
+  month_in_year INT,
+  new_customers INT,
+  churned_customers INT,
+  total_customers INT,
+  mrr_eur NUMERIC,
+  arr_eur NUMERIC,
+  revenue_eur NUMERIC,
+  cogs_eur NUMERIC,
+  personnel_eur NUMERIC,
+  infra_eur NUMERIC,
+  marketing_eur NUMERIC,
+  total_costs_eur NUMERIC,
+  employees_count INT,
+  gross_margin_pct NUMERIC,
+  burn_rate_eur NUMERIC,
+  runway_months NUMERIC,
+  cac_eur NUMERIC,
+  ltv_eur NUMERIC,
+  ltv_cac_ratio NUMERIC,
+  cash_balance_eur NUMERIC,
+  cumulative_revenue_eur NUMERIC
+);

pitch-deck/migrations/003_pitch_versions.sql

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+-- =========================================================
+-- Pitch Deck: Version Management (Git-Style History)
+-- =========================================================
+
+-- Version metadata: each version points to its parent (git-style DAG)
+CREATE TABLE IF NOT EXISTS pitch_versions (
+  id            UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  name          TEXT NOT NULL,
+  description   TEXT,
+  parent_id     UUID REFERENCES pitch_versions(id) ON DELETE SET NULL,
+  status        VARCHAR(20) NOT NULL DEFAULT 'draft'
+                CHECK (status IN ('draft', 'committed')),
+  created_by    UUID REFERENCES pitch_admins(id) ON DELETE SET NULL,
+  committed_at  TIMESTAMPTZ,
+  created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+CREATE INDEX IF NOT EXISTS idx_pitch_versions_parent ON pitch_versions(parent_id);
+CREATE INDEX IF NOT EXISTS idx_pitch_versions_status ON pitch_versions(status);
+
+-- Version content: one row per data table per version (fully materialized)
+-- table_name values: company, team, financials, market, competitors, features,
+--   milestones, metrics, funding, products, fm_scenarios, fm_assumptions
+CREATE TABLE IF NOT EXISTS pitch_version_data (
+  id            UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  version_id    UUID NOT NULL REFERENCES pitch_versions(id) ON DELETE CASCADE,
+  table_name    TEXT NOT NULL,
+  data          JSONB NOT NULL,
+  updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  updated_by    UUID REFERENCES pitch_admins(id) ON DELETE SET NULL,
+  UNIQUE(version_id, table_name)
+);
+CREATE INDEX IF NOT EXISTS idx_pitch_version_data_version ON pitch_version_data(version_id);
+
+-- Per-investor version assignment (NULL = use base tables)
+ALTER TABLE pitch_investors
+  ADD COLUMN IF NOT EXISTS assigned_version_id UUID REFERENCES pitch_versions(id) ON DELETE SET NULL;