[Coder] Schema update

[ariga-bot]

Backward-incompatible change: renamed column public.users.hashed_password to password_hash (applications referencing the old column name will break).

[github-actions]

atlas migrate lint on dirs/coder/migrations

Status	Step	Result
	1 new migration file detected	20260211152540.sql
	ERD and visual diff generated	View Visualization
	Analyze 20260211152540.sql 2 reports were found in analysis	Destructive changes detected Dropping non-virtual column "hashed_password" (DS103) Data dependent changes detected Adding a non-nullable "bytea" column "password_hash" will fail in case table "users" is not empty (MF103)
Read the full linting report on Atlas Cloud

[github-actions]

Caution

destructive changes detected
Dropping non-virtual column "hashed_password" DS103

Add a pre-migration check to ensure column "hashed_password" is NULL before dropping it

Suggested change

	-- Modify "users" table
	ALTER TABLE "users" DROP COLUMN "hashed_password", ADD COLUMN "password_hash" bytea NOT NULL;
	-- atlas:txtar
	-- checks/destructive.sql --
	-- atlas:assert DS103
	SELECT NOT EXISTS (SELECT 1 FROM "public"."users" WHERE "hashed_password" IS NOT NULL) AS "is_empty";
	-- migration.sql --
	-- Modify "users" table
	ALTER TABLE "users" DROP COLUMN "hashed_password", ADD COLUMN "password_hash" bytea NOT NULL;

Ensure to run atlas migrate hash --dir "file://dirs/coder/migrations" after applying the suggested changes.