Six changes to the place picker and the card behind it, all of them about a panel saying less and meaning more. The TREK place index has no switch in the admin panel any more. It decides whether a search leaves the instance at all, which is a property of the deployment rather than a taste: an operator pins TREK_PLACES_ENABLED=false in their compose file, and it cannot be turned off from a browser by whoever holds an admin account that day. The switch never shipped, so nothing to migrate. The standing "Using OpenStreetMap" notice above the search box is gone. It was a sentence about configuration in the middle of a form about a place, and it answered a question nobody asked while leaving the real one open. Each result now carries a small mark instead: TREK, OpenStreetMap or Google. It sits on the row rather than above the list, because a list can be two indexes interleaved and a heading could only name one of them. The saved-places filters open across the full width of the row. Two of them sit side by side, only one can be open at a time, and list names were being cut at about ten characters for no reason. Three empty states use the mascot the rest of TREK uses. The place details panel no longer tells the reader to go and ask an administrator for a Google key, the saved-places list and the road trip rail no longer explain themselves in two lines of grey text. That needed one new mood, `sad`: `sleepy` reads as falling asleep, which is a different thing from finding nothing. The Kind of stop field is out of the place form. It is a road trip concept, and the road trip view already sets it from the stop's own number, where the choice is next to what it changes.
app-config — TREK's environment configuration layer
One validated source of truth for every environment variable the server reads. Framework-free (no Nest imports), so it is consumable from anywhere: Nest DI classes, the legacy free-function services, mcp, websocket, scheduler, db and the pre-init Express middleware.
env.schema.ts Zod catalog of the whole env surface; fail-fast at boot
derive.ts pure (raw env) → typed namespace functions, exact per-site coercions
env.ts readEnv() live accessor + validateEnvAtBoot()
app-url.ts getAppUrl()/getMcpSafeUrl() instance base-URL resolution
boot-validate.ts side-effect import used by index.ts (validates before other modules load)
parsers.ts shared coercion helpers (boolTrueLoose, numberOr, csvList, …)
The Nest binding lives in src/nest/app-config/ (AppConfigModule, registerAs
tokens, RuntimeEnvService) and consumes the SAME derive functions.
Invariants — read before touching anything here
readEnv()is live. It re-derives from the currentprocess.envon every call, with no caching or memoization, ever. ~60 test files mutateprocess.envat runtime and depend on the next read observing the change.- Validation runs once, at boot, from the production entrypoint only.
Never wire the schema into
buildApp(),ConfigModule.forRoot({ validate })or a request path. Unset/blank variables always pass (defaults apply); only present-but-malformed values abort startup. The one addition on top of the schema ismanagedPreconditions()inenv.ts: cross-field rules that only apply withTREK_MANAGED, for combinations that are individually valid and together wrong. It is empty without the switch, so a self-hoster never meets it. Put a rule there only if booting anyway would be a security or data problem — not to enforce a preference. - Parity is law — with one deliberate exception. Every derived field pins
the exact coercion of the call site(s) it replaced (
Number(x) || dtreating"0"as unset, per-site defaults for the same variable, …). Do not "fix" a quirk here; log it as a follow-up instead. The exception: boolean switches are unified throughparseBool— every boolean-like variable acceptstrue/1/on/yesandfalse/0/off/no(any casing) and derives to a real boolean. This intentionally replaces the legacy per-site literals ('true'here,'1'there,'on'elsewhere); tests that pinned those narrow literals get updated when their call site migrates. - Env vs DB-setting layering stays at the call site. For
process.env.X || getSetting('x')patterns, this layer supplies only the env half; the runtime-mutable admin-setting fallback remains inline where it was. - Never convert a frozen read to a live read or vice versa. Modules that
captured env in module-top
consts (mcp, backupService, ssrfGuard, plugin rate limits, …) keep freeze-at-import timing, merely sourcing the value fromreadEnv()at module top. Request-time reads stay request-time.
app-url.ts — instance base-URL resolution (moved 2026-07-28)
getAppUrl() (APP_URL → first ALLOWED_ORIGINS entry → http://localhost:PORT,
each candidate URL-validated, ALL trailing slashes stripped) and
getMcpSafeUrl() (same, sanitized to HTTPS/localhost/127.0.0.1 for the MCP
SDK's issuer check) moved here verbatim from services/notifications.ts
(audit findings auth-2/notifications-1/admin-3/mcp-1). They follow
invariant 1: readEnv() per call, live, never cached. The invalid-URL silent
fallthrough and the strip-ALL-slashes quirk (see parsers.ts
stripTrailingSlashes) are parity-pinned — do not "fix" them here.
Classification: boot-stable vs runtime-toggled
Boot-stable (frozen at app/module creation; snapshot registerAs/ConfigType
DI in Nest, module-top readEnv() consts elsewhere):
PORT, HOST, TRUST_PROXY, SESSION_DURATION(REMEMBER), MCP_SESSION_TTL,
MCP_MAX_SESSION_PER_USER, MCP_SSE_KEEPALIVE, TREK_PLUGIN_RPC/LOG_/MAX_RSS_MB,
TREK_PLUGIN_REGISTRY_URL, TREK_WIKI_DIR*, TREK_PLACE_PHOTO_DIR, BACKUP_,
TRANSIT_API_URL, LOG_LEVEL, ALLOW_INTERNAL_NETWORK*, DEFAULT_LANGUAGE,
TREK_DB_FILE, TREK_DB_JOURNAL_MODE, TREK_DB_SYNCHRONOUS, ENCRYPTION_KEY**.
(* frozen today because the consuming module captures it at import; tests that
override these set them at file top, before the SUT import.)
(** ENCRYPTION_KEY is boot-stable for the cipher key material itself —
src/config.ts resolves and freezes it at process start, per the exemption
below.)
Runtime-toggled (read live on every access via readEnv() /
RuntimeEnvService; tests mutate these mid-lifetime):
TREK_MANAGED, PLACES_API_BASE, PLACES_API_KEY, MAPBOX_ACCESS_TOKEN, CARTO_API_KEY, DEMO_MODE, NODE_ENV, APP_VERSION, APP_URL, TREK_API_DOCS_ENABLED,
TREK_PLUGINS_ENABLED / _DEV_LINK / IGNORE_TREK_RANGE / DIR / DATA_DIR / TREK_PLUGIN_PERMISSIONS,
OIDC*, SMTP*, FORCE_HTTPS, COOKIE_SECURE, HSTS_INCLUDE_SUBDOMAINS,
ALLOWED_ORIGINS, UNSPLASH_ACCESS_KEY, WEBAUTHN*, TZ, ADMIN_EMAIL,
ADMIN_PASSWORD, IDEMPOTENCY_TTL_SECONDS, MCP_RATE_LIMIT (request-path check),
LLM_TIMEOUT_MS.
Exemptions — raw process.env stays
src/nest/plugins/runtime/plugin-host-entry.ts— runs in a scrubbed child process; must not import this layer.src/nest/plugins/supervisor/plugin-supervisor.tschild-env whitelist block — the env there is an IPC channel to the sandbox, not app configuration.- Dynamic-key reads (
process.env[name]) inplugins/host/daily-budget.tsandplugins/host/plugin-audit.ts. src/config.tsENCRYPTION_KEY/JWT_SECRET resolution — key material with file persistence and runtime rotation, not env config.- Standalone scripts (
reset-admin.js,scripts/*) andtests/**. Note thatreset-admin.jsandscripts/migrate-encryption.tsopen the database file read-write and therefore re-implementTREK_DB_JOURNAL_MODE/TREK_DB_SYNCHRONOUSinline (the journal mode lives in the file header, so they must agree with the server). Neither can import this layer — the image shipsdist/, notsrc/— so the defaults inparsers.resolveDurability()and in those two files move together.
The exemption list is enforced by the no-restricted-syntax ban on
process.env in eslint.config.mjs — keep the two lists in sync.
Follow-up candidates (quirks pinned during the migration, deliberately NOT fixed)
numberOr(Number(x) || d) treats"0"and negative-invalid values oddly:PORT=0silently becomes 3001,TREK_PLUGIN_RPC_BURST=-5stays -5.- APP_URL trailing-slash stripping differs per site (feeds strips one slash, notifications strips all).
DEMO_ADMIN_EMAILdefaults differ (demo-seed: admin@trek.app, demo-reset: admin@nomad.app).- NODE_ENV comparisons are case-sensitive at some sites (HSTS activation, platform statics, spa-fallback, authService dev_mode, oidcService frontendUrl) and case-insensitive at others.