add adjust migration

internal/database/migrations/20260419135003_create_farm_depreciation_manual_inputs.up.sql

@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS farm_depreciation_manual_inputs (
+    id BIGSERIAL PRIMARY KEY,
+    project_flock_id BIGINT NOT NULL
+        REFERENCES project_flocks(id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE,
+    total_cost NUMERIC(18, 3) NOT NULL DEFAULT 0
+        CHECK (total_cost >= 0),
+    note TEXT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    CONSTRAINT farm_depreciation_manual_inputs_unique UNIQUE (project_flock_id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_farm_depreciation_manual_inputs_project_flock_id
+    ON farm_depreciation_manual_inputs (project_flock_id);