Architect-prompti parannettu, relaatiotuki templateihin, englanti-sääntö

- SPEC_SYSTEM: chain-of-thought, domain-esimerkit, anti-patternit, relaatiosäännöt
- Speksi-puhdistus: korjaa sa_type | None -virheet automaattisesti
- Etusivun teksti päivitetty
- Koodissa käytetään aina englantia (entity/field names)

network-poc/frontend/src/pages/index.astro

@@ -1121,33 +1121,38 @@ OUTPUT FORMAT:
 
     // === Template Pipeline — rakennuspalaset ===
 
-    const SPEC_SYSTEM = `You are a software architect. Given a project description, output a JSON specification.
-Output ONLY valid JSON, no explanations. Follow this exact schema:
-{
-  "project_name": "short-name",
-  "description": "One sentence",
-  "entities": [
-    {
-      "name": "Todo",
-      "table_name": "todos",
-      "fields": [
-        {"name": "title", "sa_type": "String(255)", "py_type": "str", "nullable": false, "default": null},
-        {"name": "description", "sa_type": "Text", "py_type": "str | None", "nullable": true, "default": null},
-        {"name": "status", "sa_type": "String(20)", "py_type": "str", "nullable": false, "default": "pending"}
-      ]
-    }
-  ],
-  "extra_imports": ["from datetime import date"]
-}
-RULES:
-- sa_type: SQLAlchemy column type (String(N), Text, Integer, Date, DateTime, Boolean, Float)
-- py_type: Python type hint (str, int, float, bool, date, datetime, str | None, etc.)
-- Do NOT use Enum — use String(20) with a default value for status fields
-- nullable: true = optional field
-- default: null = no default, otherwise a string/number value
-- extra_imports: stdlib imports needed in schemas.py (e.g. "from datetime import date")
-- entity name: PascalCase singular, table_name: snake_case plural
-- Keep it simple: 1-3 entities, 3-7 fields each`;
+    const SPEC_SYSTEM = `You are a software architect who designs database schemas for Python web applications.
+
+THINK STEP BY STEP before outputting JSON:
+1. What are the main ENTITIES (nouns) in this project?
+2. What FIELDS does each entity need? (name, type, required?)
+3. Which entities REFERENCE each other? (e.g. "a Book belongs to an Author" → Book has author_id)
+4. Are there Date/DateTime fields? → add extra_imports
+
+Then output ONLY valid JSON (no explanations before or after).
+
+SCHEMA:
+{"project_name":"short-name","description":"One sentence","entities":[{"name":"EntityName","table_name":"entity_names","fields":[{"name":"field_name","sa_type":"String(255)","py_type":"str","nullable":false,"default":null}]}],"relationships":[{"from":"ChildEntity","field":"parent_id","to":"ParentEntity","type":"many-to-one"}],"extra_imports":[]}
+
+FIELD RULES:
+- sa_type: String(N), Text, Integer, Date, DateTime, Boolean, Float
+- py_type: str, int, float, bool, date, datetime — append " | None" if nullable
+- Status fields: use String(20) with default value, NEVER Enum
+- Every entity gets "id" automatically — do NOT add id or redundant ID fields
+- Use snake_case for field names
+
+RELATIONSHIP RULES:
+- If entity A "belongs to" entity B → A has b_id field (Integer, nullable=false) + relationship entry
+- EVERY _id field MUST have a matching relationship entry
+- Parent entities must appear BEFORE children in the entities array
+- If no relationships, set "relationships": []
+
+AVOID: redundant ID fields, generic names, more than 7 fields or 3 entities, non-English entity/field names (ALWAYS English even if description is Finnish)
+
+EXAMPLES (adapt, don't copy):
+Todo app → Todo: title(str), description(Text|None), due_date(Date|None), status(String20="pending")
+E-commerce → Customer: name,email / Product: name,price(Float),stock(Int) / Order: customer_id→Customer, product_id→Product, quantity(Int), order_date(Date)
+Blog → Author: name,email,bio(Text|None) / Post: title, content(Text), author_id→Author, published_at(DateTime|None), status(String20="draft")`;
 
     function extractJson(text) {
         const m = text.match(/```(?:json)?\s*\n([\s\S]*?)```/);

network-poc/frontend/src/styles/global.css

@@ -17,17 +17,20 @@ body {
     font-size: 16px;
     background: var(--bg);
     color: var(--text);
-    height: 100vh;
-    overflow: hidden;
+    min-height: 100vh;
 }
 
 .container { 
     max-width: 1600px; 
     margin: 0 auto; 
     padding: 20px 40px; 
+}
+
+#app.container {
     height: 100vh;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
 }
 
 #app:not(.active) { display: none; }
@@ -44,7 +47,7 @@ body {
 
 /* Panels */
 .panel { display: none; }
-.panel.active { display: flex; flex-direction: column; flex: 1; min-height: 0; }
+.panel.active { display: flex; flex-direction: column; flex: 1; min-height: 0; overflow-y: auto; }
 
 /* Status bar */
 .status-bar {