updating cycle close request feature to get approval from national dashboard instead auto from system

backend/database/erd_schema.sql

@@ -1,6 +1,6 @@
 -- =============================================================================
 -- PostgreSQL Schema — CPSP Dashboard ERD
--- Source: ERD_dashboard.png (updated 2026-08-20)
+-- Source: ERD_dashboard.png (updated 2026-09-09 for GM cycle-close flow)
 --
 --   user_access.status: active | inactive | superadmin
 --   (Django syncs is_active/is_staff/is_superuser from status on save:
@@ -8,8 +8,9 @@
 --    is_staff false; active => is_active true, is_superuser false, is_staff
 --    left untouched so operators can be marked staff)
 --   user_access → sites → kandang → cycles
---   cycles → flock (flock.cycle_id, required; cycles has no flock_id)
---   flock → iot_panel
+--   cycles.status: active | pending_close | closed (GM approves end_date)
+--   cycles.close_requested_by_id → user_access (optional)
+--   kandang → flock → iot_panel
 --   cycles → ai_insight, feed_sacks, chicken_counting, chicken_weight,
 --            manual_input, kpi
 --   kpi → chicken_counting, chicken_weight, feed_sacks, manual_input
@@ -78,40 +79,48 @@ CREATE INDEX IF NOT EXISTS idx_kandang_site_id ON kandang (site_id);
 
 -- -----------------------------------------------------------------------------
 -- 4. Cycles
---    No flock_id — flock belongs to cycle via flock.cycle_id.
+--    end_date is nullable until GM approves close (pending_close → closed).
+--    Soft bound while open uses dashboard visible-through (app-side).
 -- -----------------------------------------------------------------------------
 CREATE TABLE IF NOT EXISTS cycles (
-    cycle_id        SERIAL PRIMARY KEY,
-    total_days      INTEGER     NOT NULL,
-    start_date      DATE        NOT NULL,
-    end_date        DATE        NOT NULL,
-    doc_in_weight   INTEGER     NOT NULL,
-    doc_in_count    INTEGER     NOT NULL,
-    feed_initial_balance INTEGER NOT NULL DEFAULT 0,
+    cycle_id                 SERIAL PRIMARY KEY,
+    total_days               INTEGER     NOT NULL DEFAULT 1,
+    start_date               DATE        NOT NULL,
+    end_date                 DATE,  -- set on GM approve; NULL while active / pending_close
+    doc_in_weight            INTEGER     NOT NULL,
+    doc_in_count             INTEGER     NOT NULL,
+    feed_initial_balance     INTEGER     NOT NULL DEFAULT 0,
     feed_initial_balance_date DATE,
-    status          VARCHAR(30) NOT NULL,
-    created_at      TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    updated_at      TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    kandang_id      INTEGER     NOT NULL REFERENCES kandang (kandang_id) ON DELETE CASCADE,
-    CONSTRAINT chk_cycles_date_range CHECK (end_date >= start_date)
+    status                   VARCHAR(30) NOT NULL DEFAULT 'active',  -- active | pending_close | closed
+    proposed_end_date        DATE,  -- staff proposed close date (cleared after decision)
+    close_requested_at       TIMESTAMP WITH TIME ZONE,
+    close_requested_by_id    INTEGER     REFERENCES user_access (user_id) ON DELETE SET NULL,
+    created_at               TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at               TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    kandang_id               INTEGER     NOT NULL REFERENCES kandang (kandang_id) ON DELETE CASCADE,
+    CONSTRAINT chk_cycles_date_range CHECK (
+        end_date IS NULL OR end_date >= start_date
+    )
 );
 
 CREATE INDEX IF NOT EXISTS idx_cycles_kandang_id ON cycles (kandang_id);
 CREATE INDEX IF NOT EXISTS idx_cycles_status ON cycles (status);
 CREATE INDEX IF NOT EXISTS idx_cycles_start_date ON cycles (start_date);
+CREATE INDEX IF NOT EXISTS idx_cycles_close_requested_by_id ON cycles (close_requested_by_id);
 
 -- -----------------------------------------------------------------------------
 -- 5. Flock
+--    Belongs to kandang (persists across cycles); used by IoT panel.
 -- -----------------------------------------------------------------------------
 CREATE TABLE IF NOT EXISTS flock (
     flock_id    SERIAL PRIMARY KEY,
     flock_name  VARCHAR(30) NOT NULL,
-    cycle_id    INTEGER     NOT NULL REFERENCES cycles (cycle_id) ON DELETE CASCADE,
+    kandang_id  INTEGER     NOT NULL REFERENCES kandang (kandang_id) ON DELETE CASCADE,
     created_at  TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
     updated_at  TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX IF NOT EXISTS idx_flock_cycle_id ON flock (cycle_id);
+CREATE INDEX IF NOT EXISTS idx_flock_kandang_id ON flock (kandang_id);
 
 -- -----------------------------------------------------------------------------
 -- 6. IoT Panel