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docs/agents/validation/03-auth-validation.md

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+# Validation Report Template
+
+## Validator
+
+Name: Codex Validation Agent
+
+Stage Reviewed: Agent 03 - Authentication And Admin Sessions
+
+Date: 2026-04-14
+
+## Reviewed Inputs
+
+- `/Users/delete/projects/update_server/docs/agents/WORKFLOW.md`
+- `/Users/delete/projects/update_server/PRODUCT_SPEC.md`
+- `/Users/delete/projects/update_server/IMPLEMENTATION_PLAN.md`
+- `/Users/delete/projects/update_server/DEVELOPMENT_WORKFLOW.md`
+- `/Users/delete/projects/update_server/docs/agents/OPERATOR_QUICKSTART_RU.md`
+- `/Users/delete/projects/update_server/docs/agents/handoffs/03-auth.md`
+- previous validation report: `/Users/delete/projects/update_server/docs/agents/validation/02-database-validation.md`
+- implementation files under `internal/auth`, `internal/db`, `internal/http`, `internal/app`, `internal/config`, and `web/templates`
+- `GOCACHE=/tmp/go-build-auth-validate GOMODCACHE=/tmp/go-mod-auth-validate go test ./...` -> passed
+- `GOCACHE=/tmp/go-build-auth-validate GOMODCACHE=/tmp/go-mod-auth-validate go build -o /tmp/update-server-auth-validate ./cmd/server` -> passed
+- `GOCACHE=/tmp/go-build-auth-validate GOMODCACHE=/tmp/go-mod-auth-validate go build -o /tmp/update-migrate-auth-validate ./cmd/migrate` -> passed
+- live smoke checks against `127.0.0.1:18082` after starting `/tmp/update-server-auth-validate` with fresh bootstrap credentials and a fresh `DATA_DIR`:
+  - `GET /admin` -> `303 See Other` to `/admin/login`
+  - `GET /admin/login` -> `200 OK`
+  - `POST /admin/login` -> `303 See Other` with session cookie
+  - `GET /admin` with valid cookie -> `200 OK`
+  - SQLite inspection confirmed `sessions.token_hash` stores the SHA-256 of the cookie token, not the raw token
+  - `POST /admin/logout` -> `303 See Other`
+  - `GET /admin` with the old cookie after logout -> `303 See Other` to `/admin/login`
+  - SQLite inspection confirmed the session row was invalidated
+
+## Findings
+
+No blocking findings.
+
+The stage satisfies the agreed scope:
+
+- bootstrap admin creation is wired from environment configuration;
+- passwords are hashed with bcrypt;
+- session tokens are generated securely and stored hashed in SQLite;
+- the `/admin` route group is protected by session middleware and role checks;
+- login and logout behavior works in live validation, including old-cookie rejection after logout.
+
+## Required Fixes
+
+None.
+
+## Optional Improvements
+
+- Decide explicitly in a later stage whether the login endpoint should stay generic for any active user session or reject non-admin roles up front for the current admin-only UI.
+- Add CSRF protection when the security-hardening stage begins, especially for `POST /admin/logout` and future admin forms.
+
+## Status
+
+`APPROVED`