Initial commit — design docs + Phase 0 validation harness

Sets up the Socrata project repo with:

docs/ — strategy and design documents
  - idea.md: full product vision
  - implementation-plan.md: Phase 0 + Phase 1 MVP plan
  - phase-0-validation.md: 2-week validation experiment strategy
  - phase-0-plan.md: concrete Phase 0 build plan
  - phase-0-results.md: Phase 0 gate outcome — GO for MVP
  - sysml-modeling.md: metamodel + SE discipline + validation rules
  - socrates.md: agent character, surfaces, modes, prompts, lifecycle
  - sync.md: bidirectional text↔diagram sync engineering
  - design-source/: HTML/CSS/JS handoff bundle from Claude Design

phase-0/ — validated harness (CLI, no UI, no DB)
  - LM Studio (local OpenAI-compatible) generation + detection + judge
  - PlantUML rendering for SysML model visualization
  - 10-seed corpus (8 working + 2 holdouts)
  - 5 corpus runs with iteration history in reports/
  - Final gate: 10/10 pass, mean 4.32/5, holdouts validated

Phase 1 MVP scope and milestones documented in implementation-plan.md.

phase-0/seeds/04-skillswap.json

@@ -0,0 +1,18 @@
+{
+  "id": "04-skillswap",
+  "title": "SkillSwap",
+  "problem": "Remote workers have skills they could exchange (a designer who needs a quick legal opinion; a lawyer who wants design help with a deck) but no good marketplace for non-cash skill trades. Cash marketplaces (Fiverr, Upwork) introduce a money layer that kills casual exchange.",
+  "targetUser": "Remote knowledge workers, 25–45, who value reciprocal exchange over hiring out and have at least one marketable skill outside their day job.",
+  "desiredOutcome": "Two strangers complete a skill swap end-to-end (matched, scoped, exchanged, both rated positively) within one week of joining.",
+  "initialHypothesis": "A two-sided marketplace works for skill swap if matching is high-trust (reputation portable from LinkedIn) and scope is bounded (max 2-hour exchanges, no open-ended retainers).",
+  "constraints": [
+    "No money changes hands inside the platform",
+    "Identity verification via LinkedIn or similar at signup",
+    "Disputes capped to mediator review — no chargeback equivalent"
+  ],
+  "meta": {
+    "isHoldout": false,
+    "expectedDifficulty": "medium",
+    "testsFor": ["marketplace", "two-sided", "trust-mechanisms"]
+  }
+}