Frontend overhaul: NetBox-style detail pages, selectable columns, data sources

- Cultivar/species detail pages rewritten with two-column card layout, attribute tables, em-dash placeholders
- Column toggle + per-page selector on all list pages (families, species, cultivars, suppliers)
- Species list: table/card view toggle with family, layer, N-fixer, uses columns
- Cultivar detail: supplier links with SKU/price/product URL, species info section
- Data sources page (/sources) with attribution for all 10 data sources
- Fixed Cultivar/Species structs with #[serde(default)] for API compatibility
- Added table_controls component (reusable column toggle + per-page selector)
- Removed max-width constraint on content area for full-width tables
- Fixed route conflicts: merged {slug}/{id} into single {ref} routes
- Removed PostgreSQL enum types (plant_layer, drought_tolerance, etc.) in favor of TEXT
- Fixed API per_page parameter support across all list endpoints

herbapi-api/migrations/002_create_species.sql

@@ -14,28 +14,28 @@ CREATE TABLE species (
     description       TEXT,
     soil_moisture     TEXT,
     drainage_requirement TEXT,
-    organic_matter_pct NUMERIC(5,2),
+    organic_matter_pct DOUBLE PRECISION,
     nitrogen_ppm      INTEGER,
     phosphorus_ppm    INTEGER,
     potassium_ppm     INTEGER,
-    boron_ppm         NUMERIC(8,2),
+    boron_ppm         DOUBLE PRECISION,
     calcium_ppm       INTEGER,
-    copper_ppm        NUMERIC(8,2),
-    iron_ppm          NUMERIC(8,2),
+    copper_ppm        DOUBLE PRECISION,
+    iron_ppm          DOUBLE PRECISION,
     magnesium_ppm     INTEGER,
-    manganese_ppm     NUMERIC(8,2),
-    molybdenum_ppm    NUMERIC(8,2),
+    manganese_ppm     DOUBLE PRECISION,
+    molybdenum_ppm    DOUBLE PRECISION,
     sulfur_ppm        INTEGER,
-    zinc_ppm          NUMERIC(8,2),
-    ph_min            NUMERIC(4,2),
-    ph_max            NUMERIC(4,2),
+    zinc_ppm          DOUBLE PRECISION,
+    ph_min            DOUBLE PRECISION,
+    ph_max            DOUBLE PRECISION,
     soil_texture_preference TEXT[],
     hardiness_zone_usda TEXT,
     hardiness_zone_at   TEXT,
-    min_temp          NUMERIC(5,2),
-    max_temp          NUMERIC(5,2),
+    min_temp          DOUBLE PRECISION,
+    max_temp          DOUBLE PRECISION,
     drought_tolerance drought_tolerance,
-    water_requirement_mm_week NUMERIC(5,2),
+    water_requirement_mm_week DOUBLE PRECISION,
     waterlogging_tolerance BOOLEAN,
     salt_tolerance    salt_tolerance,
     edibility_rating  SMALLINT,

herbapi-api/migrations/003_create_cultivars.sql

@@ -12,27 +12,27 @@ CREATE TABLE cultivars (
     is_organic          BOOLEAN NOT NULL DEFAULT FALSE,
     perennial           BOOLEAN NOT NULL DEFAULT FALSE,
     growing_time_days   INTEGER,
-    planting_depth_cm   NUMERIC(5,2),
-    row_spacing_cm      NUMERIC(5,2),
-    plant_spacing_cm    NUMERIC(5,2),
+    planting_depth_cm   DOUBLE PRECISION,
+    row_spacing_cm      DOUBLE PRECISION,
+    plant_spacing_cm    DOUBLE PRECISION,
     days_to_germination INTEGER,
-    germination_temp_c  NUMERIC(5,2),
+    germination_temp_c  DOUBLE PRECISION,
     light_requirement   TEXT,
     stratification_required BOOLEAN,
     stratification_days INTEGER,
     scarification_required  BOOLEAN,
     seed_viability_years INTEGER,
-    storage_temp_c       NUMERIC(5,2),
+    storage_temp_c       DOUBLE PRECISION,
     storage_humidity     TEXT,
     storage_notes        TEXT,
-    min_temp            NUMERIC(5,2),
-    max_temp            NUMERIC(5,2),
+    min_temp            DOUBLE PRECISION,
+    max_temp            DOUBLE PRECISION,
     humidity            TEXT,
     light               TEXT,
     frost_tolerance     frost_tolerance,
-    min_light_hours_day      NUMERIC(4,1),
-    optimal_light_hours_day  NUMERIC(4,1),
-    greenhouse_min_temp_c    NUMERIC(5,2),
+    min_light_hours_day      DOUBLE PRECISION,
+    optimal_light_hours_day  DOUBLE PRECISION,
+    greenhouse_min_temp_c    DOUBLE PRECISION,
     indoor_season_extension_weeks INTEGER,
     ventilation_requirement  TEXT,
     heating_required         BOOLEAN,
@@ -48,9 +48,9 @@ CREATE TABLE cultivars (
     rootstock_species_id    UUID REFERENCES species(id),
     years_to_first_harvest  INTEGER,
     productive_lifespan_years INTEGER,
-    expected_yield_kg_per_m2 NUMERIC(8,2),
+    expected_yield_kg_per_m2 DOUBLE PRECISION,
     yield_unit              TEXT,
-    expected_yield_value    NUMERIC(8,2),
+    expected_yield_value    DOUBLE PRECISION,
     harvest_window_days     INTEGER,
     storage_method          TEXT[],
     shelf_life_days         INTEGER,

herbapi-api/migrations/006_create_suppliers.sql

@@ -17,8 +17,8 @@ CREATE TABLE cultivar_suppliers (
     supplier_id     UUID NOT NULL REFERENCES suppliers(id) ON DELETE CASCADE,
     article_number  TEXT,
     product_url     TEXT,
-    price_eur       NUMERIC(8,2),
-    pack_size       NUMERIC(8,2),
+    price_eur       DOUBLE PRECISION,
+    pack_size       DOUBLE PRECISION,
     pack_unit       TEXT,
     last_checked_at TIMESTAMPTZ,
     created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),