From 2f703005fcd5f4c564ce875ceab58235105deab2 Mon Sep 17 00:00:00 2001
From: codex <codex@bstein.dev>
Date: Tue, 21 Apr 2026 07:25:40 -0300
Subject: [PATCH] docs(bstein-home): document full source gate surface

---
 backend/atlas_portal/ariadne_client.py        | 16 +++++
 backend/atlas_portal/db.py                    | 16 +++++
 backend/atlas_portal/firefly_user_sync.py     | 12 ++++
 backend/atlas_portal/k8s.py                   |  5 +-
 backend/atlas_portal/keycloak.py              | 66 +++++++++++++++++++
 backend/atlas_portal/mailer.py                |  7 +-
 backend/atlas_portal/migrate.py               |  2 +
 backend/atlas_portal/nextcloud_mail_sync.py   | 13 +++-
 .../routes/access_request_onboarding.py       |  9 +++
 .../routes/access_request_state.py            | 16 +++++
 .../routes/access_request_status.py           |  8 +++
 .../routes/access_request_submission.py       | 14 ++++
 .../atlas_portal/routes/account_actions.py    | 12 ++++
 .../atlas_portal/routes/account_overview.py   |  6 ++
 backend/atlas_portal/routes/admin_access.py   | 14 ++++
 backend/atlas_portal/routes/ai.py             | 18 +++++
 backend/atlas_portal/routes/lab.py            |  8 +++
 backend/atlas_portal/vaultwarden.py           | 18 +++++
 backend/atlas_portal/wger_user_sync.py        | 12 ++++
 frontend/src/account/useAccountDashboard.js   |  2 +
 frontend/src/components/MermaidCard.vue       | 13 ++++
 frontend/src/onboarding/onboardingLabels.js   | 25 +++++--
 frontend/src/onboarding/useOnboardingFlow.js  |  4 +-
 .../src/onboarding/useOnboardingGuides.js     |  6 ++
 .../request-access/useRequestAccessFlow.js    | 19 ++++++
 frontend/src/views/AiView.vue                 |  6 ++
 26 files changed, 338 insertions(+), 9 deletions(-)

diff --git a/backend/atlas_portal/ariadne_client.py b/backend/atlas_portal/ariadne_client.py
index 42aff29..eb5f865 100644
--- a/backend/atlas_portal/ariadne_client.py
+++ b/backend/atlas_portal/ariadne_client.py
@@ -13,12 +13,16 @@ logger = logging.getLogger(__name__)
 
 
 class AriadneError(Exception):
+    """Carry an upstream-facing error message and HTTP status code."""
+
     def __init__(self, message: str, status_code: int = 502) -> None:
         super().__init__(message)
         self.status_code = status_code
 
 
 def enabled() -> bool:
+    """Return whether Ariadne proxying is configured for this portal."""
+
     return bool(settings.ARIADNE_URL)
 
 
@@ -40,6 +44,12 @@ def request_raw(
     payload: Any | None = None,
     params: dict[str, Any] | None = None,
 ) -> httpx.Response:
+    """Send one authenticated request to Ariadne and return the raw response.
+
+    WHY: callers need the exact upstream status/body so local routes can act as
+    a transparent compatibility proxy while still applying retry telemetry.
+    """
+
     if not enabled():
         raise AriadneError("ariadne not configured", 503)
 
@@ -84,6 +94,12 @@ def proxy(
     payload: Any | None = None,
     params: dict[str, Any] | None = None,
 ) -> tuple[Any, int]:
+    """Proxy an Ariadne response through Flask as JSON plus status code.
+
+    WHY: route handlers should share upstream error normalization instead of
+    duplicating JSON parsing and outage handling at each call site.
+    """
+
     try:
         resp = request_raw(method, path, payload=payload, params=params)
     except AriadneError as exc:
diff --git a/backend/atlas_portal/db.py b/backend/atlas_portal/db.py
index 0be83a1..c580635 100644
--- a/backend/atlas_portal/db.py
+++ b/backend/atlas_portal/db.py
@@ -15,10 +15,14 @@ _pool: ConnectionPool | None = None
 
 
 def configured() -> bool:
+    """Return whether the portal has enough database configuration to connect."""
+
     return bool(settings.PORTAL_DATABASE_URL)
 
 
 def _pool_kwargs() -> dict[str, Any]:
+    """Build shared psycopg pool options for Atlas portal connections."""
+
     options = (
         f"-c lock_timeout={settings.PORTAL_DB_LOCK_TIMEOUT_SEC}s "
         f"-c statement_timeout={settings.PORTAL_DB_STATEMENT_TIMEOUT_SEC}s "
@@ -33,6 +37,8 @@ def _pool_kwargs() -> dict[str, Any]:
 
 
 def _get_pool() -> ConnectionPool:
+    """Return the singleton Postgres connection pool for request handlers."""
+
     global _pool
     if _pool is None:
         if not settings.PORTAL_DATABASE_URL:
@@ -48,6 +54,8 @@ def _get_pool() -> ConnectionPool:
 
 @contextmanager
 def connect() -> Iterator[psycopg.Connection[Any]]:
+    """Yield a dict-row Postgres connection from the shared pool."""
+
     if not settings.PORTAL_DATABASE_URL:
         raise RuntimeError("portal database not configured")
     with _get_pool().connection() as conn:
@@ -70,6 +78,12 @@ def _release_advisory_lock(conn: psycopg.Connection[Any], lock_id: int) -> None:
 
 
 def run_migrations() -> None:
+    """Create and upgrade the portal schema using an advisory lock.
+
+    WHY: every replica may start concurrently, so schema changes must be safe
+    to run repeatedly without allowing multiple pods to migrate at once.
+    """
+
     if not settings.PORTAL_DATABASE_URL or not settings.PORTAL_RUN_MIGRATIONS:
         return
     with connect() as conn:
@@ -193,4 +207,6 @@ def run_migrations() -> None:
 
 
 def ensure_schema() -> None:
+    """Run startup migrations through a small semantic wrapper."""
+
     run_migrations()
diff --git a/backend/atlas_portal/firefly_user_sync.py b/backend/atlas_portal/firefly_user_sync.py
index 00c9e39..ee34e55 100644
--- a/backend/atlas_portal/firefly_user_sync.py
+++ b/backend/atlas_portal/firefly_user_sync.py
@@ -21,6 +21,8 @@ def _job_from_cronjob(
     email: str,
     password: str,
 ) -> dict[str, Any]:
+    """Render a one-off Firefly user sync Job from the managed CronJob template."""
+
     spec = cronjob.get("spec") if isinstance(cronjob.get("spec"), dict) else {}
     jt = spec.get("jobTemplate") if isinstance(spec.get("jobTemplate"), dict) else {}
     job_spec = jt.get("spec") if isinstance(jt.get("spec"), dict) else {}
@@ -70,6 +72,8 @@ def _job_from_cronjob(
 
 
 def _job_succeeded(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as successfully complete."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("succeeded") or 0) > 0:
         return True
@@ -83,6 +87,8 @@ def _job_succeeded(job: dict[str, Any]) -> bool:
 
 
 def _job_failed(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as failed."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("failed") or 0) > 0:
         return True
@@ -96,6 +102,12 @@ def _job_failed(job: dict[str, Any]) -> bool:
 
 
 def trigger(username: str, email: str, password: str, wait: bool = True) -> dict[str, Any]:
+    """Start the Firefly sync Job for one user and optionally wait for completion.
+
+    WHY: account self-service should be able to repair one user without waiting
+    for the broader scheduled reconciliation loop.
+    """
+
     username = (username or "").strip()
     if not username:
         raise RuntimeError("missing username")
diff --git a/backend/atlas_portal/k8s.py b/backend/atlas_portal/k8s.py
index 26d689b..3d963d0 100644
--- a/backend/atlas_portal/k8s.py
+++ b/backend/atlas_portal/k8s.py
@@ -24,6 +24,8 @@ def _read_service_account() -> tuple[str, str]:
 
 
 def get_json(path: str) -> dict[str, Any]:
+    """Fetch a Kubernetes API object as JSON using the pod service account."""
+
     token, ca_path = _read_service_account()
     url = f"{_K8S_BASE_URL}{path}"
     with httpx.Client(
@@ -40,6 +42,8 @@ def get_json(path: str) -> dict[str, Any]:
 
 
 def post_json(path: str, payload: dict[str, Any]) -> dict[str, Any]:
+    """Post a JSON payload to Kubernetes using the pod service account."""
+
     token, ca_path = _read_service_account()
     url = f"{_K8S_BASE_URL}{path}"
     with httpx.Client(
@@ -53,4 +57,3 @@ def post_json(path: str, payload: dict[str, Any]) -> dict[str, Any]:
         if not isinstance(data, dict):
             raise RuntimeError("unexpected kubernetes response")
         return data
-
diff --git a/backend/atlas_portal/keycloak.py b/backend/atlas_portal/keycloak.py
index a5d72b5..e135128 100644
--- a/backend/atlas_portal/keycloak.py
+++ b/backend/atlas_portal/keycloak.py
@@ -14,6 +14,8 @@ from . import settings
 
 
 class KeycloakOIDC:
+    """Verify user-facing Keycloak tokens for portal requests."""
+
     def __init__(self) -> None:
         self._jwk_client: PyJWKClient | None = None
 
@@ -23,6 +25,12 @@ class KeycloakOIDC:
         return self._jwk_client
 
     def verify(self, token: str) -> dict[str, Any]:
+        """Validate a bearer token and return decoded claims.
+
+        WHY: the portal trusts Keycloak groups and usernames only after issuer
+        and client ownership are checked locally.
+        """
+
         if not settings.KEYCLOAK_ENABLED:
             raise ValueError("keycloak not enabled")
 
@@ -50,6 +58,8 @@ class KeycloakOIDC:
 
 
 class KeycloakAdminClient:
+    """Perform service-account Keycloak admin operations for provisioning."""
+
     def __init__(self) -> None:
         self._token: str = ""
         self._expires_at: float = 0.0
@@ -57,6 +67,12 @@ class KeycloakAdminClient:
 
     @staticmethod
     def _safe_update_payload(full: dict[str, Any]) -> dict[str, Any]:
+        """Extract mutable fields from a full Keycloak user document.
+
+        WHY: partial updates can accidentally clear profile or attribute data,
+        so callers merge desired changes into a safe copy first.
+        """
+
         payload: dict[str, Any] = {}
         username = full.get("username")
         if isinstance(username, str):
@@ -86,9 +102,13 @@ class KeycloakAdminClient:
         return payload
 
     def ready(self) -> bool:
+        """Return whether admin-client credentials are available."""
+
         return bool(settings.KEYCLOAK_ADMIN_CLIENT_ID and settings.KEYCLOAK_ADMIN_CLIENT_SECRET)
 
     def _get_token(self) -> str:
+        """Return a cached service-account token, refreshing before expiry."""
+
         if not self.ready():
             raise RuntimeError("keycloak admin client not configured")
 
@@ -120,9 +140,13 @@ class KeycloakAdminClient:
         return {"Authorization": f"Bearer {self._get_token()}"}
 
     def headers(self) -> dict[str, str]:
+        """Return authorization headers for callers that need raw admin access."""
+
         return self._headers()
 
     def find_user(self, username: str) -> dict[str, Any] | None:
+        """Look up one Keycloak user by exact username."""
+
         url = f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}/users"
         # Keycloak 26.x in our environment intermittently 400s on filtered user queries unless `max` is set.
         # Use `max=1` and exact username match to keep admin calls reliable for portal provisioning.
@@ -137,6 +161,8 @@ class KeycloakAdminClient:
             return user if isinstance(user, dict) else None
 
     def find_user_by_email(self, email: str) -> dict[str, Any] | None:
+        """Look up one Keycloak user by exact email address."""
+
         email = (email or "").strip()
         if not email:
             return None
@@ -161,6 +187,8 @@ class KeycloakAdminClient:
         return None
 
     def get_user(self, user_id: str) -> dict[str, Any]:
+        """Fetch a full Keycloak user representation by ID."""
+
         url = f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}/users/{quote(user_id, safe='')}"
         with httpx.Client(timeout=settings.HTTP_CHECK_TIMEOUT_SEC) as client:
             resp = client.get(url, headers=self._headers())
@@ -171,12 +199,16 @@ class KeycloakAdminClient:
             return data
 
     def update_user(self, user_id: str, payload: dict[str, Any]) -> None:
+        """Replace a Keycloak user document with the supplied payload."""
+
         url = f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}/users/{quote(user_id, safe='')}"
         with httpx.Client(timeout=settings.HTTP_CHECK_TIMEOUT_SEC) as client:
             resp = client.put(url, headers={**self._headers(), "Content-Type": "application/json"}, json=payload)
             resp.raise_for_status()
 
     def update_user_safe(self, user_id: str, payload: dict[str, Any]) -> None:
+        """Merge selected user changes into the current Keycloak document."""
+
         full = self.get_user(user_id)
         merged = self._safe_update_payload(full)
         for key, value in payload.items():
@@ -192,6 +224,8 @@ class KeycloakAdminClient:
         self.update_user(user_id, merged)
 
     def create_user(self, payload: dict[str, Any]) -> str:
+        """Create a Keycloak user and return the generated user ID."""
+
         url = f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}/users"
         with httpx.Client(timeout=settings.HTTP_CHECK_TIMEOUT_SEC) as client:
             resp = client.post(url, headers={**self._headers(), "Content-Type": "application/json"}, json=payload)
@@ -202,6 +236,8 @@ class KeycloakAdminClient:
         raise RuntimeError("failed to determine created user id")
 
     def reset_password(self, user_id: str, password: str, temporary: bool = True) -> None:
+        """Set a Keycloak password credential for a user."""
+
         url = (
             f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}"
             f"/users/{quote(user_id, safe='')}/reset-password"
@@ -212,6 +248,8 @@ class KeycloakAdminClient:
             resp.raise_for_status()
 
     def set_user_attribute(self, username: str, key: str, value: str) -> None:
+        """Set one single-value Keycloak user attribute by username."""
+
         user = self.find_user(username)
         if not user:
             raise RuntimeError("user not found")
@@ -230,6 +268,8 @@ class KeycloakAdminClient:
         self.update_user(user_id, payload)
 
     def get_group_id(self, group_name: str) -> str | None:
+        """Resolve and cache the Keycloak ID for a group name."""
+
         cached = self._group_id_cache.get(group_name)
         if cached:
             return cached
@@ -252,6 +292,8 @@ class KeycloakAdminClient:
         return None
 
     def list_group_names(self) -> list[str]:
+        """Return all Keycloak group names visible to the admin client."""
+
         url = f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}/groups"
         with httpx.Client(timeout=settings.HTTP_CHECK_TIMEOUT_SEC) as client:
             resp = client.get(url, headers=self._headers())
@@ -263,6 +305,8 @@ class KeycloakAdminClient:
         names: set[str] = set()
 
         def walk(groups: list[Any]) -> None:
+            """Visit nested Keycloak group records and collect names."""
+
             for group in groups:
                 if not isinstance(group, dict):
                     continue
@@ -277,6 +321,8 @@ class KeycloakAdminClient:
         return sorted(names)
 
     def list_user_groups(self, user_id: str) -> list[str]:
+        """Return group names assigned to one Keycloak user."""
+
         url = (
             f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}"
             f"/users/{quote(user_id, safe='')}/groups"
@@ -297,6 +343,8 @@ class KeycloakAdminClient:
         return names
 
     def add_user_to_group(self, user_id: str, group_id: str) -> None:
+        """Attach one Keycloak user to one group by ID."""
+
         url = (
             f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}"
             f"/users/{quote(user_id, safe='')}/groups/{quote(group_id, safe='')}"
@@ -306,6 +354,8 @@ class KeycloakAdminClient:
             resp.raise_for_status()
 
     def execute_actions_email(self, user_id: str, actions: list[str], redirect_uri: str) -> None:
+        """Ask Keycloak to email required-account-action links to a user."""
+
         url = (
             f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}"
             f"/users/{quote(user_id, safe='')}/execute-actions-email"
@@ -321,6 +371,8 @@ class KeycloakAdminClient:
             resp.raise_for_status()
 
     def get_user_credentials(self, user_id: str) -> list[dict[str, Any]]:
+        """Return credential metadata for one Keycloak user."""
+
         url = (
             f"{settings.KEYCLOAK_ADMIN_URL}/admin/realms/{settings.KEYCLOAK_REALM}"
             f"/users/{quote(user_id, safe='')}/credentials"
@@ -339,6 +391,8 @@ _ADMIN: KeycloakAdminClient | None = None
 
 
 def oidc_client() -> KeycloakOIDC:
+    """Return the singleton OIDC verifier."""
+
     global _OIDC
     if _OIDC is None:
         _OIDC = KeycloakOIDC()
@@ -346,6 +400,8 @@ def oidc_client() -> KeycloakOIDC:
 
 
 def admin_client() -> KeycloakAdminClient:
+    """Return the singleton Keycloak admin client."""
+
     global _ADMIN
     if _ADMIN is None:
         _ADMIN = KeycloakAdminClient()
@@ -364,6 +420,8 @@ def _normalize_groups(groups: Any) -> list[str]:
 
 
 def _extract_bearer_token() -> str | None:
+    """Extract a bearer token from the current Flask request."""
+
     header = request.headers.get("Authorization", "")
     if not header:
         return None
@@ -377,8 +435,12 @@ def _extract_bearer_token() -> str | None:
 
 
 def require_auth(fn):
+    """Decorate a Flask route so it requires a valid Keycloak bearer token."""
+
     @wraps(fn)
     def wrapper(*args, **kwargs):
+        """Validate the request token and place normalized claims on Flask globals."""
+
         token = _extract_bearer_token()
         if not token:
             return jsonify({"error": "missing bearer token"}), 401
@@ -397,6 +459,8 @@ def require_auth(fn):
 
 
 def require_portal_admin() -> tuple[bool, Any]:
+    """Return whether the authenticated user can use portal admin actions."""
+
     if not settings.KEYCLOAK_ENABLED:
         return False, (jsonify({"error": "keycloak not enabled"}), 503)
 
@@ -411,6 +475,8 @@ def require_portal_admin() -> tuple[bool, Any]:
 
 
 def require_account_access() -> tuple[bool, Any]:
+    """Return whether the authenticated user can use self-service account pages."""
+
     if not settings.KEYCLOAK_ENABLED:
         return False, (jsonify({"error": "keycloak not enabled"}), 503)
     if not settings.ACCOUNT_ALLOWED_GROUPS:
diff --git a/backend/atlas_portal/mailer.py b/backend/atlas_portal/mailer.py
index ac0a322..90252b6 100644
--- a/backend/atlas_portal/mailer.py
+++ b/backend/atlas_portal/mailer.py
@@ -7,10 +7,14 @@ from . import settings
 
 
 class MailerError(RuntimeError):
+    """Signal a mail delivery problem without leaking provider internals."""
+
     pass
 
 
 def send_text_email(*, to_addr: str, subject: str, body: str) -> None:
+    """Send a plaintext email through the configured SMTP relay."""
+
     if not to_addr:
         raise MailerError("missing recipient")
     if not settings.SMTP_HOST:
@@ -35,6 +39,8 @@ def send_text_email(*, to_addr: str, subject: str, body: str) -> None:
 
 
 def access_request_verification_body(*, request_code: str, verify_url: str) -> str:
+    """Render the access-request email verification message body."""
+
     return "\n".join(
         [
             "Atlas — confirm your email",
@@ -50,4 +56,3 @@ def access_request_verification_body(*, request_code: str, verify_url: str) -> s
             "",
         ]
     )
-
diff --git a/backend/atlas_portal/migrate.py b/backend/atlas_portal/migrate.py
index 30948dd..4945cb8 100644
--- a/backend/atlas_portal/migrate.py
+++ b/backend/atlas_portal/migrate.py
@@ -4,6 +4,8 @@ from .db import run_migrations
 
 
 def main() -> None:
+    """Run database migrations when invoked as a module or script."""
+
     run_migrations()
 
 
diff --git a/backend/atlas_portal/nextcloud_mail_sync.py b/backend/atlas_portal/nextcloud_mail_sync.py
index 7879728..42edd0d 100644
--- a/backend/atlas_portal/nextcloud_mail_sync.py
+++ b/backend/atlas_portal/nextcloud_mail_sync.py
@@ -16,6 +16,8 @@ def _safe_name_fragment(value: str, max_len: int = 24) -> str:
 
 
 def _job_from_cronjob(cronjob: dict[str, Any], username: str) -> dict[str, Any]:
+    """Render a one-off Nextcloud mail sync Job from the CronJob template."""
+
     spec = cronjob.get("spec") if isinstance(cronjob.get("spec"), dict) else {}
     jt = spec.get("jobTemplate") if isinstance(spec.get("jobTemplate"), dict) else {}
     job_spec = jt.get("spec") if isinstance(jt.get("spec"), dict) else {}
@@ -61,6 +63,8 @@ def _job_from_cronjob(cronjob: dict[str, Any], username: str) -> dict[str, Any]:
 
 
 def _job_succeeded(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as successfully complete."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("succeeded") or 0) > 0:
         return True
@@ -74,6 +78,8 @@ def _job_succeeded(job: dict[str, Any]) -> bool:
 
 
 def _job_failed(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as failed."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("failed") or 0) > 0:
         return True
@@ -87,6 +93,12 @@ def _job_failed(job: dict[str, Any]) -> bool:
 
 
 def trigger(username: str, wait: bool = True) -> dict[str, Any]:
+    """Start the Nextcloud mail sync Job for one user and optionally wait.
+
+    WHY: onboarding and account actions need a targeted sync repair path that
+    reuses the same template as scheduled cluster automation.
+    """
+
     username = (username or "").strip()
     if not username:
         raise RuntimeError("missing username")
@@ -120,4 +132,3 @@ def trigger(username: str, wait: bool = True) -> dict[str, Any]:
         last_state = "running"
 
     return {"job": job_name, "status": last_state}
-
diff --git a/backend/atlas_portal/routes/access_request_onboarding.py b/backend/atlas_portal/routes/access_request_onboarding.py
index ed09d9f..eb0700a 100644
--- a/backend/atlas_portal/routes/access_request_onboarding.py
+++ b/backend/atlas_portal/routes/access_request_onboarding.py
@@ -11,6 +11,13 @@ def register_access_request_onboarding(app, deps) -> None:
 
     @app.route("/api/access/request/onboarding/attest", methods=["POST"])
     def request_access_onboarding_attest() -> Any:
+        """Record or clear a user-attested onboarding step.
+
+        WHY: onboarding mixes manual tasks with Keycloak-managed tasks, so this
+        route enforces prerequisites and only accepts attestations for UI-owned
+        steps.
+        """
+
         if not deps.configured():
             return jsonify({"error": "server not deps.configured"}), 503
 
@@ -161,6 +168,8 @@ def register_access_request_onboarding(app, deps) -> None:
 
     @app.route("/api/access/request/onboarding/keycloak-password-rotate", methods=["POST"])
     def request_access_onboarding_keycloak_password_rotate() -> Any:
+        """Request Keycloak password rotation for an onboarding user."""
+
         if not deps.configured():
             return jsonify({"error": "server not deps.configured"}), 503
 
diff --git a/backend/atlas_portal/routes/access_request_state.py b/backend/atlas_portal/routes/access_request_state.py
index d9e280c..546a818 100644
--- a/backend/atlas_portal/routes/access_request_state.py
+++ b/backend/atlas_portal/routes/access_request_state.py
@@ -101,6 +101,8 @@ def _send_verification_email(*, request_code: str, email: str, token: str) -> No
 
 
 class VerificationError(Exception):
+    """Describe an email verification failure with an HTTP status."""
+
     def __init__(self, status_code: int, message: str) -> None:
         super().__init__(message)
         self.status_code = status_code
@@ -108,6 +110,7 @@ class VerificationError(Exception):
 
 
 def _verify_request(conn, code: str, token: str) -> str:
+    """Validate email proof and atomically advance a pending request."""
     row = conn.execute(
         """
         SELECT status, email_verification_token_hash, email_verification_sent_at, email_verified_at
@@ -161,6 +164,7 @@ def _normalize_status(status: str) -> str:
 
 
 def _fetch_completed_onboarding_steps(conn, request_code: str) -> set[str]:
+    """Return manually attested onboarding steps for one request."""
     rows = conn.execute(
         "SELECT step FROM access_request_onboarding_steps WHERE request_code = %s",
         (request_code,),
@@ -182,6 +186,7 @@ def _normalize_flag_list(raw: Any) -> set[str]:
 
 
 def _fetch_request_flags_and_email(conn, request_code: str) -> tuple[set[str], str]:
+    """Return approval flags and contact email used by onboarding decisions."""
     row = conn.execute(
         "SELECT approval_flags, contact_email FROM access_requests WHERE request_code = %s",
         (request_code,),
@@ -194,6 +199,7 @@ def _fetch_request_flags_and_email(conn, request_code: str) -> tuple[set[str], s
 
 
 def _user_in_group(username: str, group_name: str) -> bool:
+    """Return whether a Keycloak user belongs to a named group."""
     if not username or not group_name:
         return False
     if not admin_client().ready():
@@ -219,6 +225,7 @@ def _vaultwarden_grandfathered(conn, request_code: str, username: str) -> tuple[
 
 
 def _resolve_recovery_email(username: str, fallback: str) -> str:
+    """Find the best recovery email for Vaultwarden onboarding."""
     if username and admin_client().ready():
         try:
             user = admin_client().find_user(username) or {}
@@ -234,6 +241,7 @@ def _resolve_recovery_email(username: str, fallback: str) -> str:
 
 
 def _password_rotation_requested(conn, request_code: str) -> bool:
+    """Return whether Keycloak password rotation was requested for this request."""
     row = conn.execute(
         """
         SELECT 1
@@ -247,6 +255,7 @@ def _password_rotation_requested(conn, request_code: str) -> bool:
 
 
 def _request_keycloak_password_rotation(conn, request_code: str, username: str) -> None:
+    """Require Keycloak password rotation and persist the request marker."""
     if not username:
         raise ValueError("username missing")
     if not admin_client().ready():
@@ -277,6 +286,7 @@ def _request_keycloak_password_rotation(conn, request_code: str, username: str)
 
 
 def _extract_attr(attrs: Any, key: str) -> str:
+    """Return the first string value for a Keycloak attribute."""
     if not isinstance(attrs, dict):
         return ""
     raw = attrs.get(key)
@@ -291,6 +301,7 @@ def _extract_attr(attrs: Any, key: str) -> str:
 
 
 def _vaultwarden_status_for_user(username: str) -> str:
+    """Read the Vaultwarden lifecycle status mirrored on a Keycloak user."""
     if not username:
         return ""
     if not admin_client().ready():
@@ -308,6 +319,7 @@ def _vaultwarden_status_for_user(username: str) -> str:
 
 
 def _auto_completed_service_steps(attrs: Any) -> set[str]:
+    """Infer onboarding steps completed by backend service automation."""
     completed: set[str] = set()
     if not isinstance(attrs, dict):
         return completed
@@ -333,6 +345,7 @@ def _auto_completed_service_steps(attrs: Any) -> set[str]:
 
 
 def _auto_completed_keycloak_steps(conn, request_code: str, username: str) -> set[str]:
+    """Infer onboarding steps from Keycloak profile state."""
     if not username:
         return set()
     if not admin_client().ready():
@@ -389,6 +402,7 @@ def _completed_onboarding_steps(conn, request_code: str, username: str) -> set[s
 
 
 def _automation_ready(conn, request_code: str, username: str) -> bool:
+    """Return whether account provisioning has finished enough for onboarding."""
     if not username:
         return False
     if not admin_client().ready():
@@ -423,6 +437,7 @@ def _automation_ready(conn, request_code: str, username: str) -> bool:
 
 
 def _advance_status(conn, request_code: str, username: str, status: str) -> str:
+    """Advance an access request through automatic status transitions."""
     status = _normalize_status(status)
 
     if status == "accounts_building" and _automation_ready(conn, request_code, username):
@@ -450,6 +465,7 @@ def _advance_status(conn, request_code: str, username: str, status: str) -> str:
 
 
 def _onboarding_payload(conn, request_code: str, username: str) -> dict[str, Any]:
+    """Build the onboarding progress payload returned to the frontend."""
     completed_steps = sorted(_completed_onboarding_steps(conn, request_code, username))
     password_rotation_requested = _password_rotation_requested(conn, request_code)
     grandfathered, contact_email = _vaultwarden_grandfathered(conn, request_code, username)
diff --git a/backend/atlas_portal/routes/access_request_status.py b/backend/atlas_portal/routes/access_request_status.py
index 2dbb61f..ec1cfdf 100644
--- a/backend/atlas_portal/routes/access_request_status.py
+++ b/backend/atlas_portal/routes/access_request_status.py
@@ -11,6 +11,12 @@ def register_access_request_status(app, deps) -> None:
 
     @app.route("/api/access/request/status", methods=["POST"])
     def request_access_status() -> Any:
+        """Return current provisioning and onboarding status for a request.
+
+        WHY: this endpoint is polled by the public flow, so it also advances
+        safe automatic transitions before rendering the latest state.
+        """
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
@@ -142,6 +148,8 @@ def register_access_request_status(app, deps) -> None:
 
     @app.route("/api/access/request/retry", methods=["POST"])
     def request_access_retry() -> Any:
+        """Retry failed provisioning tasks for an access request."""
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
diff --git a/backend/atlas_portal/routes/access_request_submission.py b/backend/atlas_portal/routes/access_request_submission.py
index 956b670..217bc16 100644
--- a/backend/atlas_portal/routes/access_request_submission.py
+++ b/backend/atlas_portal/routes/access_request_submission.py
@@ -13,6 +13,8 @@ def register_access_request_submission(app, deps) -> None:
 
     @app.route("/api/access/request/availability", methods=["GET"])
     def request_access_availability() -> Any:
+        """Report whether a requested username can start access signup."""
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
@@ -55,6 +57,12 @@ def register_access_request_submission(app, deps) -> None:
 
     @app.route("/api/access/request", methods=["POST"])
     def request_access() -> Any:
+        """Create or refresh an email-verified access request.
+
+        WHY: submissions are anonymous, so this route validates names, rate
+        limits by client/request, and emails a proof token before queuing work.
+        """
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
@@ -202,6 +210,8 @@ def register_access_request_submission(app, deps) -> None:
 
     @app.route("/api/access/request/verify", methods=["POST"])
     def request_access_verify() -> Any:
+        """Verify a submitted access request using a request code and token."""
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
@@ -246,6 +256,8 @@ def register_access_request_submission(app, deps) -> None:
 
     @app.route("/api/access/request/verify-link", methods=["GET"])
     def request_access_verify_link() -> Any:
+        """Verify an emailed access-request link and redirect to the UI."""
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
@@ -267,6 +279,8 @@ def register_access_request_submission(app, deps) -> None:
 
     @app.route("/api/access/request/resend", methods=["POST"])
     def request_access_resend() -> Any:
+        """Send a fresh verification token for a pending access request."""
+
         if not deps.settings.ACCESS_REQUEST_ENABLED:
             return jsonify({"error": "request access disabled"}), 503
         if not deps.configured():
diff --git a/backend/atlas_portal/routes/account_actions.py b/backend/atlas_portal/routes/account_actions.py
index 3284aa8..7f7833b 100644
--- a/backend/atlas_portal/routes/account_actions.py
+++ b/backend/atlas_portal/routes/account_actions.py
@@ -34,6 +34,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/mailu/rotate", methods=["POST"])
     @require_auth
     def account_mailu_rotate() -> Any:
+        """Rotate the user's Mailu app password and trigger dependent syncs."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
@@ -87,6 +89,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/wger/reset", methods=["POST"])
     @require_auth
     def account_wger_reset() -> Any:
+        """Reset the user's Wger password through the sync Job path."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
@@ -140,6 +144,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/wger/rotation/check", methods=["POST"])
     @require_auth
     def account_wger_rotation_check() -> Any:
+        """Proxy or reject Wger rotation status checks for this account."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
@@ -150,6 +156,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/firefly/reset", methods=["POST"])
     @require_auth
     def account_firefly_reset() -> Any:
+        """Reset the user's Firefly password through the sync Job path."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
@@ -203,6 +211,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/firefly/rotation/check", methods=["POST"])
     @require_auth
     def account_firefly_rotation_check() -> Any:
+        """Proxy or reject Firefly rotation status checks for this account."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
@@ -213,6 +223,8 @@ def register_account_actions(app) -> None:
     @app.route("/api/account/nextcloud/mail/sync", methods=["POST"])
     @require_auth
     def account_nextcloud_mail_sync() -> Any:
+        """Trigger a targeted Nextcloud mail sync for the signed-in user."""
+
         ok, resp = require_account_access()
         if not ok:
             return resp
diff --git a/backend/atlas_portal/routes/account_overview.py b/backend/atlas_portal/routes/account_overview.py
index f0385e8..b89389d 100644
--- a/backend/atlas_portal/routes/account_overview.py
+++ b/backend/atlas_portal/routes/account_overview.py
@@ -34,6 +34,12 @@ def register_account_overview(app) -> None:
     @app.route("/api/account/overview", methods=["GET"])
     @require_auth
     def account_overview() -> Any:
+        """Build the signed-in user's self-service account dashboard state.
+
+        WHY: the UI needs one coherent status payload assembled from Keycloak,
+        service sync markers, and legacy fallback checks.
+        """
+
         ok, resp = require_account_access()
         if not ok:
             return resp
diff --git a/backend/atlas_portal/routes/admin_access.py b/backend/atlas_portal/routes/admin_access.py
index 510c004..3b1814e 100644
--- a/backend/atlas_portal/routes/admin_access.py
+++ b/backend/atlas_portal/routes/admin_access.py
@@ -12,9 +12,13 @@ from ..provisioning import provision_access_request
 
 
 def register(app) -> None:
+    """Register administrator routes for access-request decisions."""
+
     @app.route("/api/admin/access/requests", methods=["GET"])
     @require_auth
     def admin_list_requests() -> Any:
+        """List pending access requests for portal administrators."""
+
         ok, resp = require_portal_admin()
         if not ok:
             return resp
@@ -56,6 +60,8 @@ def register(app) -> None:
     @app.route("/api/admin/access/flags", methods=["GET"])
     @require_auth
     def admin_list_flags() -> Any:
+        """List Keycloak groups that can be applied as approval flags."""
+
         ok, resp = require_portal_admin()
         if not ok:
             return resp
@@ -74,6 +80,12 @@ def register(app) -> None:
     @app.route("/api/admin/access/requests/<username>/approve", methods=["POST"])
     @require_auth
     def admin_approve_request(username: str) -> Any:
+        """Approve one verified access request and start provisioning.
+
+        WHY: approval should atomically record the admin decision before
+        best-effort provisioning so status polling can surface any later issue.
+        """
+
         ok, resp = require_portal_admin()
         if not ok:
             return resp
@@ -125,6 +137,8 @@ def register(app) -> None:
     @app.route("/api/admin/access/requests/<username>/deny", methods=["POST"])
     @require_auth
     def admin_deny_request(username: str) -> Any:
+        """Deny one pending access request with optional admin context."""
+
         ok, resp = require_portal_admin()
         if not ok:
             return resp
diff --git a/backend/atlas_portal/routes/ai.py b/backend/atlas_portal/routes/ai.py
index b534a61..4810e9e 100644
--- a/backend/atlas_portal/routes/ai.py
+++ b/backend/atlas_portal/routes/ai.py
@@ -13,9 +13,13 @@ from .. import settings
 
 
 def register(app) -> None:
+    """Register the Atlas AI chat and model-info endpoints."""
+
     @app.route("/api/chat", methods=["POST"])
     @app.route("/api/ai/chat", methods=["POST"])
     def ai_chat() -> Any:
+        """Return an Atlasbot answer or a budget-aware fallback message."""
+
         payload = request.get_json(silent=True) or {}
         user_message = (payload.get("message") or "").strip()
         profile = (payload.get("profile") or payload.get("mode") or "atlas-quick").strip().lower()
@@ -61,6 +65,8 @@ def register(app) -> None:
     @app.route("/api/chat/info", methods=["GET"])
     @app.route("/api/ai/info", methods=["GET"])
     def ai_info() -> Any:
+        """Return model and placement metadata for the requested AI profile."""
+
         profile = (request.args.get("profile") or "atlas-quick").strip().lower()
         meta = _discover_ai_meta(profile)
         return jsonify(meta)
@@ -69,6 +75,8 @@ def register(app) -> None:
 
 
 def _atlasbot_answer(message: str, mode: str, conversation_id: str) -> str:
+    """Ask Atlasbot for one answer and return an empty string on soft failure."""
+
     endpoint = settings.AI_ATLASBOT_ENDPOINT
     if not endpoint:
         return ""
@@ -99,6 +107,12 @@ def _atlasbot_timeout_sec(mode: str) -> float:
 
 
 def _discover_ai_meta(profile: str) -> dict[str, str]:
+    """Discover AI model metadata from settings and the running Kubernetes pod.
+
+    WHY: the frontend needs a human-readable model/GPU hint even when the model
+    image or GPU placement changes outside the portal code.
+    """
+
     meta = {
         "node": settings.AI_NODE_NAME,
         "gpu": settings.AI_GPU_DESC,
@@ -168,10 +182,14 @@ def _discover_ai_meta(profile: str) -> dict[str, str]:
 
 
 def _start_keep_warm() -> None:
+    """Start the optional background keep-warm loop for the chat backend."""
+
     if not settings.AI_WARM_ENABLED or settings.AI_WARM_INTERVAL_SEC <= 0:
         return
 
     def loop() -> None:
+        """Periodically send a tiny chat request so the backend stays warm."""
+
         while True:
             time.sleep(settings.AI_WARM_INTERVAL_SEC)
             try:
diff --git a/backend/atlas_portal/routes/lab.py b/backend/atlas_portal/routes/lab.py
index 5909176..b03dd5c 100644
--- a/backend/atlas_portal/routes/lab.py
+++ b/backend/atlas_portal/routes/lab.py
@@ -15,6 +15,8 @@ _LAB_STATUS_CACHE: dict[str, Any] = {"ts": 0.0, "value": None}
 
 
 def _vm_query(expr: str) -> float | None:
+    """Run one instant VictoriaMetrics query and return the largest value."""
+
     url = f"{settings.VM_BASE_URL}/api/v1/query?{urlencode({'query': expr})}"
     with urlopen(url, timeout=settings.VM_QUERY_TIMEOUT_SEC) as resp:
         payload = json.loads(resp.read().decode("utf-8"))
@@ -40,6 +42,8 @@ def _vm_query(expr: str) -> float | None:
 
 
 def _http_ok(url: str, expect_substring: str | None = None) -> bool:
+    """Return whether a URL responds successfully and optionally contains text."""
+
     try:
         with urlopen(url, timeout=settings.HTTP_CHECK_TIMEOUT_SEC) as resp:
             if getattr(resp, "status", 200) != 200:
@@ -53,8 +57,12 @@ def _http_ok(url: str, expect_substring: str | None = None) -> bool:
 
 
 def register(app) -> None:
+    """Register the lightweight lab connectivity status endpoint."""
+
     @app.route("/api/lab/status")
     def lab_status() -> Any:
+        """Return cached Atlas/Oceanus health hints for the home page."""
+
         now = time.time()
         cached = _LAB_STATUS_CACHE.get("value")
         if cached and (now - float(_LAB_STATUS_CACHE.get("ts", 0.0)) < settings.LAB_STATUS_CACHE_SEC):
diff --git a/backend/atlas_portal/vaultwarden.py b/backend/atlas_portal/vaultwarden.py
index 0a774a3..e511862 100644
--- a/backend/atlas_portal/vaultwarden.py
+++ b/backend/atlas_portal/vaultwarden.py
@@ -28,6 +28,8 @@ def _read_service_account() -> tuple[str, str]:
 
 
 def _k8s_get_json(path: str) -> dict[str, Any]:
+    """Fetch a Kubernetes object as JSON through the pod service account."""
+
     token, ca_path = _read_service_account()
     url = f"{_K8S_BASE_URL}{path}"
     with httpx.Client(
@@ -44,12 +46,16 @@ def _k8s_get_json(path: str) -> dict[str, Any]:
 
 
 def _k8s_find_pod_ip(namespace: str, label_selector: str) -> str:
+    """Find a usable Vaultwarden pod IP for direct admin fallback."""
+
     data = _k8s_get_json(f"/api/v1/namespaces/{namespace}/pods?labelSelector={label_selector}")
     items = data.get("items") or []
     if not isinstance(items, list) or not items:
         raise RuntimeError("no vaultwarden pods found")
 
     def _pod_ready(pod: dict[str, Any]) -> bool:
+        """Return whether a listed pod is running and ready enough to contact."""
+
         status = pod.get("status") if isinstance(pod.get("status"), dict) else {}
         if status.get("phase") != "Running":
             return False
@@ -74,6 +80,8 @@ def _k8s_find_pod_ip(namespace: str, label_selector: str) -> str:
 
 
 def _k8s_get_secret_value(namespace: str, name: str, key: str) -> str:
+    """Read and decode one Kubernetes Secret value."""
+
     data = _k8s_get_json(f"/api/v1/namespaces/{namespace}/secrets/{name}")
     blob = data.get("data") if isinstance(data.get("data"), dict) else {}
     raw = blob.get(key)
@@ -90,6 +98,8 @@ def _k8s_get_secret_value(namespace: str, name: str, key: str) -> str:
 
 @dataclass(frozen=True)
 class VaultwardenInvite:
+    """Describe the result of attempting to create a Vaultwarden invite."""
+
     ok: bool
     status: str
     detail: str = ""
@@ -103,6 +113,12 @@ _ADMIN_RATE_LIMITED_UNTIL: float = 0.0
 
 
 def _admin_session(base_url: str) -> httpx.Client:
+    """Return a cached authenticated Vaultwarden admin session.
+
+    WHY: Vaultwarden rate-limits admin login attempts, so invite creation must
+    reuse a short-lived session instead of logging in for every user action.
+    """
+
     global _ADMIN_SESSION, _ADMIN_SESSION_EXPIRES_AT, _ADMIN_SESSION_BASE_URL, _ADMIN_RATE_LIMITED_UNTIL
     now = time.time()
     with _ADMIN_LOCK:
@@ -146,6 +162,8 @@ def _admin_session(base_url: str) -> httpx.Client:
 
 
 def invite_user(email: str) -> VaultwardenInvite:
+    """Invite one email address to Vaultwarden through the admin UI."""
+
     global _ADMIN_RATE_LIMITED_UNTIL
     email = (email or "").strip()
     if not email or "@" not in email:
diff --git a/backend/atlas_portal/wger_user_sync.py b/backend/atlas_portal/wger_user_sync.py
index ed8f63c..88bb279 100644
--- a/backend/atlas_portal/wger_user_sync.py
+++ b/backend/atlas_portal/wger_user_sync.py
@@ -21,6 +21,8 @@ def _job_from_cronjob(
     email: str,
     password: str,
 ) -> dict[str, Any]:
+    """Render a one-off Wger user sync Job from the managed CronJob template."""
+
     spec = cronjob.get("spec") if isinstance(cronjob.get("spec"), dict) else {}
     jt = spec.get("jobTemplate") if isinstance(spec.get("jobTemplate"), dict) else {}
     job_spec = jt.get("spec") if isinstance(jt.get("spec"), dict) else {}
@@ -71,6 +73,8 @@ def _job_from_cronjob(
 
 
 def _job_succeeded(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as successfully complete."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("succeeded") or 0) > 0:
         return True
@@ -84,6 +88,8 @@ def _job_succeeded(job: dict[str, Any]) -> bool:
 
 
 def _job_failed(job: dict[str, Any]) -> bool:
+    """Return whether Kubernetes reports the sync Job as failed."""
+
     status = job.get("status") if isinstance(job.get("status"), dict) else {}
     if int(status.get("failed") or 0) > 0:
         return True
@@ -97,6 +103,12 @@ def _job_failed(job: dict[str, Any]) -> bool:
 
 
 def trigger(username: str, email: str, password: str, wait: bool = True) -> dict[str, Any]:
+    """Start the Wger sync Job for one user and optionally wait for completion.
+
+    WHY: account actions need an immediate per-user repair path without
+    mutating the reusable CronJob template that Flux owns.
+    """
+
     username = (username or "").strip()
     if not username:
         raise RuntimeError("missing username")
diff --git a/frontend/src/account/useAccountDashboard.js b/frontend/src/account/useAccountDashboard.js
index 013b223..ed19c32 100644
--- a/frontend/src/account/useAccountDashboard.js
+++ b/frontend/src/account/useAccountDashboard.js
@@ -256,6 +256,7 @@ export function useAccountDashboard() {
     return Array.isArray(selected) && selected.includes(flag);
   }
 
+  // WHY: admins need readable applicant names even when optional fields are missing; @returns display name.
   function formatName(req) {
     if (!req) return "unknown";
     const parts = [];
@@ -380,6 +381,7 @@ export function useAccountDashboard() {
     }
   }
 
+  // WHY: Safari/private-mode clipboard support varies; @returns whether fallback copy completed.
   function fallbackCopy(text) {
     const textarea = document.createElement("textarea");
     textarea.value = text;
diff --git a/frontend/src/components/MermaidCard.vue b/frontend/src/components/MermaidCard.vue
index a16375f..88921c5 100644
--- a/frontend/src/components/MermaidCard.vue
+++ b/frontend/src/components/MermaidCard.vue
@@ -67,6 +67,11 @@ const renderDiagram = async () => {
   }
 };
 
+/**
+ * Cancel pending Mermaid rendering work before scheduling a replacement.
+ *
+ * @returns {void}
+ */
 function cancelScheduledRender() {
   if (!scheduledHandle) return;
   if (scheduledKind === "idle" && window.cancelIdleCallback) {
@@ -78,6 +83,14 @@ function cancelScheduledRender() {
   scheduledKind = "";
 }
 
+/**
+ * Schedule Mermaid rendering during idle time when the browser supports it.
+ *
+ * WHY: diagrams are decorative and can be expensive, so rendering should not
+ * compete with first paint or input responsiveness.
+ *
+ * @returns {void}
+ */
 function scheduleRenderDiagram() {
   cancelScheduledRender();
   if (!props.diagram) return;
diff --git a/frontend/src/onboarding/onboardingLabels.js b/frontend/src/onboarding/onboardingLabels.js
index 9476f32..3253754 100644
--- a/frontend/src/onboarding/onboardingLabels.js
+++ b/frontend/src/onboarding/onboardingLabels.js
@@ -1,4 +1,9 @@
-/** Display labels and pill classes for onboarding status values. */
+/**
+ * Convert an onboarding status code into display copy.
+ *
+ * @param {string} value - Raw status returned by the backend.
+ * @returns {string} Human-readable status label.
+ */
 export function statusLabel(value) {
     const key = (value || "").trim();
     if (key === "pending_email_verification") return "confirm email";
@@ -8,8 +13,14 @@ export function statusLabel(value) {
     if (key === "ready") return "ready";
     if (key === "denied") return "rejected";
     return key || "unknown";
-  }
+}
 
+/**
+ * Convert an onboarding status code into the matching pill class.
+ *
+ * @param {string} value - Raw status returned by the backend.
+ * @returns {string} CSS class for status emphasis.
+ */
 export function statusPillClass(value) {
     const key = (value || "").trim();
     if (key === "pending_email_verification") return "pill-warn";
@@ -19,11 +30,17 @@ export function statusPillClass(value) {
     if (key === "ready") return "pill-info";
     if (key === "denied") return "pill-bad";
     return "pill-warn";
-  }
+}
 
+/**
+ * Convert a provisioning task status into a pill class.
+ *
+ * @param {string} value - Raw task status returned by the backend.
+ * @returns {string} CSS class for task emphasis.
+ */
 export function taskPillClass(value) {
     const key = (value || "").trim();
     if (key === "ok") return "pill-ok";
     if (key === "error") return "pill-bad";
     return "pill-warn";
-  }
+}
diff --git a/frontend/src/onboarding/useOnboardingFlow.js b/frontend/src/onboarding/useOnboardingFlow.js
index 49b40d4..c1453f7 100644
--- a/frontend/src/onboarding/useOnboardingFlow.js
+++ b/frontend/src/onboarding/useOnboardingFlow.js
@@ -7,11 +7,9 @@ import { SECTION_DEFS, STEP_PREREQS, VAULTWARDEN_TEMP_STEP } from "./onboardingS
 
 /**
  * Build the Onboarding page state machine.
- *
  * WHY: onboarding coordinates request status, guide media, password reveal,
  * and service attestation flow; isolating that state keeps the view focused
  * on layout and makes the workflow independently testable.
- *
  * @param {import("vue-router").RouteLocationNormalizedLoaded} route - active route with optional request code query params.
  * @returns {object} reactive onboarding state and event handlers.
  */
@@ -118,6 +116,7 @@ export function useOnboardingFlow(route) {
     return prereqs.some((req) => !isStepDone(req));
   }
 
+  // WHY: service login rules vary by step; @returns optional helper copy.
   function stepNote(step) {
     if (step.id === "vaultwarden_master_password") {
       return `Vaultwarden uses an email login. Use ${vaultwardenLoginEmailLower.value} to sign in.`;
@@ -134,6 +133,7 @@ export function useOnboardingFlow(route) {
     return "";
   }
 
+  // WHY: step state combines completion, prerequisites, and backend automation; @returns pill text.
   function stepPillLabel(step) {
     if (isStepDone(step.id)) return "done";
     if (isStepBlocked(step.id)) return "blocked";
diff --git a/frontend/src/onboarding/useOnboardingGuides.js b/frontend/src/onboarding/useOnboardingGuides.js
index 967e4d0..86a0d3c 100644
--- a/frontend/src/onboarding/useOnboardingGuides.js
+++ b/frontend/src/onboarding/useOnboardingGuides.js
@@ -12,6 +12,12 @@ export function useOnboardingGuides({ isStepDone, isStepBlocked }) {
   const guidePage = ref({});
   const lightboxShot = ref(null);
 
+  /**
+   * Return screenshot groups for a step, honoring configured head/tail limits.
+   *
+   * @param {object} step - Onboarding step definition with optional guide metadata.
+   * @returns {Array<object>} Screenshot groups to render for the guide carousel.
+   */
   function guideGroups(step) {
     if (!step.guide) return [];
     const service = step.guide.service;
diff --git a/frontend/src/request-access/useRequestAccessFlow.js b/frontend/src/request-access/useRequestAccessFlow.js
index 8f8fb1e..73cbf24 100644
--- a/frontend/src/request-access/useRequestAccessFlow.js
+++ b/frontend/src/request-access/useRequestAccessFlow.js
@@ -11,6 +11,12 @@ import { onMounted, reactive, ref, watch } from "vue";
  * @returns {object} reactive state and event handlers used by the view template.
  */
 export function useRequestAccessFlow(route) {
+  /**
+   * Convert backend request status into copy for the public flow.
+   *
+   * @param {string} value - Raw access request status.
+   * @returns {string} Human-readable status label.
+   */
   function statusLabel(value) {
     const key = (value || "").trim();
     if (key === "pending_email_verification") return "confirm email";
@@ -22,6 +28,12 @@ export function useRequestAccessFlow(route) {
     return key || "unknown";
   }
 
+  /**
+   * Convert backend request status into the matching pill class.
+   *
+   * @param {string} value - Raw access request status.
+   * @returns {string} CSS class for status emphasis.
+   */
   function statusPillClass(value) {
     const key = (value || "").trim();
     if (key === "pending_email_verification") return "pill-warn";
@@ -87,6 +99,13 @@ export function useRequestAccessFlow(route) {
     availability.blockSubmit = false;
   }
 
+  /**
+   * Update username availability UI state from a normalized backend result.
+   *
+   * @param {string} state - Availability state key.
+   * @param {string} detail - Optional human-readable explanation.
+   * @returns {void}
+   */
   function setAvailability(state, detail = "") {
     availability.detail = detail;
     availability.blockSubmit = false;
diff --git a/frontend/src/views/AiView.vue b/frontend/src/views/AiView.vue
index 9160be5..739d04a 100644
--- a/frontend/src/views/AiView.vue
+++ b/frontend/src/views/AiView.vue
@@ -119,6 +119,12 @@ const chatWindow = ref(null);
 const copied = ref(false);
 const conversationIds = reactive({});
 
+/**
+ * Return a stable local conversation ID for one AI profile.
+ *
+ * @param {string} profile - Active AI profile key.
+ * @returns {string} Stable conversation identifier persisted in local storage.
+ */
 function ensureConversationId(profile) {
   if (conversationIds[profile]) return conversationIds[profile];
   const key = `atlas-ai-conversation:${profile}`;