Add Flask web UI, Docker Compose, core engine + tests

- physcom core: CLI, 5-pass pipeline, SQLite repo, 37 tests
- physcom_web: Flask app with HTMX for entity/domain/pipeline/results CRUD
- Docker Compose: web + cli services sharing a named volume for the DB
- Clean up local settings to use wildcard permissions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/physcom/llm/prompts.py

@@ -0,0 +1,37 @@
+"""Prompt templates for LLM-assisted passes."""
+
+PHYSICS_ESTIMATION_PROMPT = """\
+You are a physics estimation assistant. Given the following transportation concept, \
+estimate the requested metrics using order-of-magnitude physics reasoning.
+
+## Concept
+{description}
+
+## Metrics to estimate
+{metrics}
+
+## Instructions
+- Use real-world physics to estimate each metric.
+- If the concept is implausible, still provide your best estimate.
+- Return ONLY valid JSON mapping metric names to numeric values.
+- Example: {{"speed": 45.0, "cost_efficiency": 0.15, "safety": 0.7}}
+"""
+
+PLAUSIBILITY_REVIEW_PROMPT = """\
+You are reviewing a novel transportation concept for social and practical viability.
+
+## Concept
+{description}
+
+## Metric Scores
+{scores}
+
+## Instructions
+Review this concept for:
+1. Social viability — would people actually use this?
+2. Practical barriers — what engineering or regulatory obstacles exist?
+3. Novelty — does anything similar already exist?
+4. Overall plausibility — is this a genuinely interesting innovation or nonsense?
+
+Provide a concise 2-4 sentence assessment.
+"""