diff --git a/.env.example b/.env.example
index 496e602..7cdf4bb 100644
--- a/.env.example
+++ b/.env.example
@@ -22,6 +22,27 @@ SUPABASE_ANON_KEY=
 # PIG runs fine in invite-only mode. Treat it as the most powerful secret here.
 SUPABASE_SERVICE_KEY=
 
+# --- Auth: on-premises (OIDC) ---------------------------------------------
+# Set PIG_OIDC_ISSUER to authenticate against your own identity provider —
+# Okta, Entra, Keycloak, Auth0, Authentik, Google Workspace, anything
+# standards-compliant. It TAKES PRECEDENCE over the Supabase values above, so
+# an on-prem install can leave those in place.
+#
+# PIG never sees a password. It verifies the token your provider issued and
+# reads two things: a stable subject, and an email. Everything else — teams,
+# roles, capabilities — is PIG's own data keyed on that subject, so users are
+# provisioned in PIG by invite, not by your directory.
+PIG_OIDC_ISSUER=
+# Optional. Discovered from the issuer's /.well-known/openid-configuration when
+# omitted. Set it to skip discovery entirely on an air-gapped network.
+PIG_OIDC_JWKS_URI=
+# STRONGLY recommended. Without it, a token your provider issued for ANY other
+# application in the same tenant is accepted here as a PIG session.
+PIG_OIDC_AUDIENCE=
+# Comma-separated, in preference order. Defaults to email,preferred_username,upn
+# which covers most providers; Entra sometimes needs upn first.
+PIG_OIDC_EMAIL_CLAIMS=
+
 # --- Application ------------------------------------------------------------
 PIG_PORT=8920
 PIG_PUBLIC_URL=http://localhost:8920
diff --git a/AGENTS.md b/AGENTS.md
index 0430104..0274624 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -91,6 +91,11 @@ in the service layer or in the agent. The API signals the agent by *writing a
 row to `agent_tasks`*, never by calling it — so the queue survives the agent
 being down and no request thread ever blocks on a model.
 
+**There are two auth providers, behind one interface.** Supabase for the
+hosted deployment, OIDC for on-premises — see `apps/api/src/lib/auth-provider.ts`.
+Both reduce to "verify a bearer token, return a subject and an email", because
+that is all PIG needs. Never reach for a provider SDK outside that file.
+
 **Authentication is not authorization.** A verified JWT proves someone has an
 account in an identity provider that PIG *shares with another application*. It
 does not prove they belong here. Access requires a row in PIG's own `users`
@@ -135,9 +140,34 @@ conflict on, do an existence check instead.
 flag set to false was silently on. Use the `envBoolean` helper in
 `apps/api/src/lib/config.ts`.
 
-**Grid children that truncate need `min-w-0`.** Grid items default to
-`min-width: auto` and `truncate` sets `nowrap`, so a long title becomes
-unshrinkable content and the page scrolls sideways on a phone.
+**Mutations must confirm themselves.** `<Toaster />` is mounted in `App.tsx`
+inside `ThemeProvider`; use `toast.success` / `toast.error` in every mutation's
+`onSuccess` / `onError`. The shadcn Toaster ships wired to `next-themes`, which
+PIG does not use — it was rewired to PIG's `useTheme`. Before that it was never
+mounted, so toasts already written in RecordSheets fired into nothing and every
+save completed in silence.
+
+**shadcn's `accent` is a SUBTLE surface, not the brand.** shadcn uses
+`bg-accent` for hover, focus and selected states — dropdown items, command
+rows, ghost buttons. The brand is `primary`. In `tailwind.config.js`, `accent`
+is therefore aliased to `--accent-subtle` and `primary` to `--accent`. Use
+`bg-primary` for a solid brand fill; never `bg-accent`. Mapping them the other
+way makes every hover state paint a full-strength brand block, which in dark
+mode with the monochrome palette is a glaring white slab.
+
+**Grid and flex children need `min-w-0`.** They default to
+`min-width: auto`, meaning they refuse to shrink below their content — and a
+`tabular-nums` figure, a `whitespace-nowrap` badge or a `truncate` title is all
+it takes. The page then scrolls sideways on a phone and nothing reports an
+error. This was fixed three separate times at individual call sites before
+`Card` was given `min-w-0` on its base class; **any new container primitive
+needs the same**. Check with:
+
+```js
+document.documentElement.scrollWidth - document.documentElement.clientWidth
+```
+
+It should be 0 on every route at 393px wide.
 
 **Drizzle-generated migrations are not always valid SQL.** A `jsonb → integer`
 cast was emitted without the `USING` clause Postgres requires. Always apply a
@@ -155,6 +185,13 @@ Verified: 1× A100 at 1.79, 2× A100 at 3.58. `gpuMemory` is likewise a node
 total. There is an open bug for this — the mapper currently stores both as if
 per-GPU, so an 8-GPU node reads eight times too expensive.
 
+**The SPA fallback must never answer an `/api/` path.** Without an explicit
+guard, an unknown API route returns `200 text/html` — the app shell — and the
+caller sees `response.ok === true` before failing on `JSON.parse` with
+"Unexpected token '<'", a long way from the cause. Both the static-file
+middleware and the SPA fallback in `apps/api/src/server.ts` carry the guard;
+anything added after them needs it too.
+
 **Prime Intellect has two API hosts.** `api.primeintellect.ai` is compute and
 pods. Inference is `api.pinference.ai/api/v1`, OpenAI-compatible.
 
diff --git a/apps/api/e2e/critical-path.test.ts b/apps/api/e2e/critical-path.test.ts
index 5a6b50d..22edd07 100644
--- a/apps/api/e2e/critical-path.test.ts
+++ b/apps/api/e2e/critical-path.test.ts
@@ -53,6 +53,7 @@ test('invite-bound member creates, sells and observes capacity through authentic
     PIGGY_ENABLED: 'false',
   });
   const authProvider = {
+    name: 'e2e-stub',
     async verifyAccessToken(token: string) {
       if (token !== accessToken) throw new Error('Invalid E2E token.');
       return { subject, email };
diff --git a/apps/api/src/lib/auth-provider.ts b/apps/api/src/lib/auth-provider.ts
index 7f1a22e..61cc9d2 100644
--- a/apps/api/src/lib/auth-provider.ts
+++ b/apps/api/src/lib/auth-provider.ts
@@ -4,8 +4,22 @@
  * Providers prove an external identity. They do not decide whether that
  * identity belongs to PIG; workspace membership remains a database decision
  * in the authenticator and signup route.
+ *
+ * Two implementations:
+ *
+ *   **Supabase** — the hosted deployment. Well-known JWKS path, fixed issuer.
+ *   **OIDC**     — any standards-compliant identity provider, which is what an
+ *                  on-premises install needs. The customer already runs Okta,
+ *                  Entra, Keycloak, Auth0, Authentik or Google Workspace behind
+ *                  their VPN; asking them to stand up a second identity system
+ *                  to use PIG would be a serious adoption tax, and in a
+ *                  regulated environment often simply refused.
+ *
+ * Both reduce to the same thing — verify a bearer token, return a stable
+ * subject and an email — because that is all PIG needs. Everything downstream
+ * (teams, roles, capabilities) is PIG's own data keyed on that subject.
  */
-import { createRemoteJWKSet, jwtVerify } from 'jose';
+import { createRemoteJWKSet, jwtVerify, type JWTPayload } from 'jose';
 import type { Config } from './config';
 
 export interface VerifiedIdentity {
@@ -14,6 +28,8 @@ export interface VerifiedIdentity {
 }
 
 export interface AuthProvider {
+  /** Human-readable, for startup logging and the health surface. */
+  readonly name: string;
   verifyAccessToken(token: string): Promise<VerifiedIdentity>;
 }
 
@@ -24,6 +40,7 @@ export function createSupabaseAuthProvider(supabaseUrl: string): AuthProvider {
   const jwks = createRemoteJWKSet(new URL(`${issuer}/.well-known/jwks.json`));
 
   return {
+    name: 'supabase',
     async verifyAccessToken(token: string): Promise<VerifiedIdentity> {
       const { payload } = await jwtVerify(token, jwks, { issuer });
       if (!payload.sub) throw new Error('token has no subject');
@@ -36,8 +53,146 @@ export function createSupabaseAuthProvider(supabaseUrl: string): AuthProvider {
   };
 }
 
+export interface OidcProviderOptions {
+  /** The `iss` value the provider stamps into its tokens. */
+  issuer: string;
+  /**
+   * JWKS location. Optional: when omitted it is discovered from
+   * `${issuer}/.well-known/openid-configuration`, which every compliant
+   * provider serves. Setting it explicitly avoids one startup fetch and lets
+   * an air-gapped deployment skip discovery entirely.
+   */
+  jwksUri?: string;
+  /**
+   * Expected audience. **Strongly recommended.**
+   *
+   * Without it, any token the identity provider issued for *any* application
+   * in the same tenant will verify here — a token minted for an unrelated
+   * internal tool would be accepted as a PIG session. `jose` only checks the
+   * audience when asked to, so leaving this unset is a real hole rather than a
+   * relaxed default, and it is warned about at boot.
+   */
+  audience?: string;
+  /**
+   * Claim to read the email from. Providers disagree: most use `email`, some
+   * corporate Entra configurations use `preferred_username` or `upn`. Each
+   * candidate is tried in order.
+   */
+  emailClaims?: string[];
+  /** Tolerance for clock skew between PIG and the provider. */
+  clockToleranceSeconds?: number;
+}
+
+const DEFAULT_EMAIL_CLAIMS = ['email', 'preferred_username', 'upn'];
+
+export function createOidcAuthProvider(options: OidcProviderOptions): AuthProvider {
+  const issuer = options.issuer.replace(/\/+$/, '');
+  const emailClaims = options.emailClaims?.length ? options.emailClaims : DEFAULT_EMAIL_CLAIMS;
+
+  /*
+   * Resolved once, lazily, and cached — including the failure.
+   *
+   * Discovery is a network call, so doing it per request would put the
+   * identity provider on the critical path of every API call. Doing it eagerly
+   * at boot would mean PIG refuses to start if the provider is briefly
+   * unreachable, which on a customer's own network is a bad trade: their
+   * identity provider rebooting should not take the CRM down with it.
+   *
+   * So it happens on first use and is retried on the next request if it fails.
+   */
+  let jwksPromise: Promise<ReturnType<typeof createRemoteJWKSet>> | null = null;
+
+  async function resolveJwks() {
+    if (options.jwksUri) return createRemoteJWKSet(new URL(options.jwksUri));
+
+    const discoveryUrl = `${issuer}/.well-known/openid-configuration`;
+    const response = await fetch(discoveryUrl, { headers: { accept: 'application/json' } });
+    if (!response.ok) {
+      throw new Error(
+        `OIDC discovery failed: ${discoveryUrl} returned ${response.status}. ` +
+          'Set PIG_OIDC_JWKS_URI to skip discovery.',
+      );
+    }
+
+    const document = (await response.json()) as { jwks_uri?: string; issuer?: string };
+    if (!document.jwks_uri) {
+      throw new Error(`OIDC discovery document at ${discoveryUrl} has no jwks_uri.`);
+    }
+
+    // A discovery document whose issuer disagrees with the configured one means
+    // the deployment is pointed somewhere unexpected. Verification would fail
+    // later anyway; failing here says why.
+    if (document.issuer && document.issuer.replace(/\/+$/, '') !== issuer) {
+      throw new Error(
+        `OIDC issuer mismatch: configured ${issuer}, discovery reports ${document.issuer}.`,
+      );
+    }
+
+    return createRemoteJWKSet(new URL(document.jwks_uri));
+  }
+
+  return {
+    name: 'oidc',
+    async verifyAccessToken(token: string): Promise<VerifiedIdentity> {
+      if (!jwksPromise) {
+        jwksPromise = resolveJwks().catch((error) => {
+          // Clear the cache so the next request retries rather than being
+          // stuck with a rejected promise for the process lifetime.
+          jwksPromise = null;
+          throw error;
+        });
+      }
+
+      const jwks = await jwksPromise;
+      const { payload } = await jwtVerify(token, jwks, {
+        issuer,
+        ...(options.audience ? { audience: options.audience } : {}),
+        clockTolerance: options.clockToleranceSeconds ?? 5,
+      });
+
+      if (!payload.sub) throw new Error('token has no subject');
+
+      return { subject: payload.sub, email: readEmail(payload, emailClaims) };
+    },
+  };
+}
+
+function readEmail(payload: JWTPayload, claims: string[]): string | undefined {
+  for (const claim of claims) {
+    const value = payload[claim];
+    // A `preferred_username` is not always an address; only take it if it
+    // looks like one, so a bare username never becomes an account identity.
+    if (typeof value === 'string' && value.includes('@')) return value.toLowerCase();
+  }
+  return undefined;
+}
+
+/**
+ * Build the provider this deployment is configured for.
+ *
+ * OIDC wins when both are set, so an on-premises install can keep the Supabase
+ * values in its environment file without them quietly taking precedence.
+ */
 export function createConfiguredAuthProvider(
-  config: Pick<Config, 'SUPABASE_URL'>,
+  config: Pick<
+    Config,
+    | 'SUPABASE_URL'
+    | 'PIG_OIDC_ISSUER'
+    | 'PIG_OIDC_JWKS_URI'
+    | 'PIG_OIDC_AUDIENCE'
+    | 'PIG_OIDC_EMAIL_CLAIMS'
+  >,
 ): AuthProvider | null {
+  if (config.PIG_OIDC_ISSUER) {
+    return createOidcAuthProvider({
+      issuer: config.PIG_OIDC_ISSUER,
+      jwksUri: config.PIG_OIDC_JWKS_URI || undefined,
+      audience: config.PIG_OIDC_AUDIENCE || undefined,
+      emailClaims: config.PIG_OIDC_EMAIL_CLAIMS
+        ? config.PIG_OIDC_EMAIL_CLAIMS.split(',').map((claim) => claim.trim()).filter(Boolean)
+        : undefined,
+    });
+  }
+
   return config.SUPABASE_URL ? createSupabaseAuthProvider(config.SUPABASE_URL) : null;
 }
diff --git a/apps/api/src/lib/config.ts b/apps/api/src/lib/config.ts
index 8155f7f..b3168d4 100644
--- a/apps/api/src/lib/config.ts
+++ b/apps/api/src/lib/config.ts
@@ -33,6 +33,21 @@ const schema = z.object({
   DATABASE_URL: z.string().min(1, 'DATABASE_URL is required.'),
 
   SUPABASE_URL: z.string().url().optional(),
+
+  /*
+   * OIDC — the on-premises path.
+   *
+   * A customer running PIG inside their own network already has an identity
+   * provider. Setting PIG_OIDC_ISSUER switches authentication to it and takes
+   * precedence over any Supabase values left in the environment file.
+   */
+  PIG_OIDC_ISSUER: z.string().url().optional(),
+  /** Optional. Discovered from the issuer when omitted. */
+  PIG_OIDC_JWKS_URI: z.string().url().optional(),
+  /** Strongly recommended — see the boot warning. */
+  PIG_OIDC_AUDIENCE: z.string().optional(),
+  /** Comma-separated, in preference order. Defaults cover most providers. */
+  PIG_OIDC_EMAIL_CLAIMS: z.string().optional(),
   SUPABASE_ANON_KEY: z.string().optional(),
   SUPABASE_SERVICE_KEY: z.string().optional(),
 
@@ -203,17 +218,48 @@ function warnOnFootguns(config: Config): void {
     warn('PIG_ADMIN_EMAILS is empty — no user will have platform-admin rights.');
   }
 
-  if (!config.SUPABASE_URL) {
+  // Keyed on BOTH providers, not just Supabase. An OIDC deployment has
+  // authentication and this warning previously claimed it did not — which is
+  // worse than saying nothing, because an operator reading "authentication is
+  // DISABLED" on a correctly secured install learns to ignore the warnings.
+  if (!config.SUPABASE_URL && !config.PIG_OIDC_ISSUER) {
     warn(
-      'SUPABASE_URL is not set — authentication is DISABLED and every request ' +
-        'runs as the development user. Never do this in production.',
+      'No identity provider is configured (SUPABASE_URL or PIG_OIDC_ISSUER) — ' +
+        'authentication is DISABLED and every request runs as the development ' +
+        'user. Never do this in production.',
     );
   }
 
-  if (config.isProduction && !config.SUPABASE_URL) {
+  if (config.PIG_OIDC_ISSUER && config.SUPABASE_URL) {
+    warn(
+      'Both PIG_OIDC_ISSUER and SUPABASE_URL are set — OIDC takes precedence and ' +
+        'Supabase will not be used for authentication.',
+    );
+  }
+
+  if (config.PIG_OIDC_ISSUER && !config.PIG_OIDC_AUDIENCE) {
+    // Not fatal, because some providers issue single-audience tokens where it
+    // adds nothing — but on a shared corporate tenant this is the difference
+    // between "a token for PIG" and "a token for anything in the company".
+    warn(
+      'PIG_OIDC_AUDIENCE is not set. Any token your identity provider issued for ' +
+        'ANY application in the same tenant will be accepted here. Set it unless ' +
+        'you are certain that is safe.',
+    );
+  }
+
+  if (config.PIG_OIDC_ISSUER && config.SUPABASE_SERVICE_KEY) {
+    warn(
+      'SUPABASE_SERVICE_KEY is set while running on OIDC. Self-registration mints ' +
+        'Supabase accounts, which an OIDC deployment does not use — unset it and ' +
+        'provision users through your identity provider instead.',
+    );
+  }
+
+  if (config.isProduction && !config.SUPABASE_URL && !config.PIG_OIDC_ISSUER) {
     throw new Error(
-      'Refusing to start: NODE_ENV=production with no SUPABASE_URL would serve ' +
-        'the entire CRM unauthenticated.',
+      'Refusing to start: NODE_ENV=production with neither SUPABASE_URL nor ' +
+        'PIG_OIDC_ISSUER would serve the entire CRM unauthenticated.',
     );
   }
 
diff --git a/apps/api/src/server.ts b/apps/api/src/server.ts
index 3c510bc..46ec14b 100644
--- a/apps/api/src/server.ts
+++ b/apps/api/src/server.ts
@@ -57,9 +57,25 @@ if (existsSync(webDist)) {
     return serveStatic({ root: './apps/web/dist' })(c, next);
   });
 
-  // Client-side routes (/margin, /capacity, …) have no file on disk and must
-  // receive the shell so the router can take over.
-  app.get('*', serveStatic({ path: './apps/web/dist/index.html' }));
+  /*
+   * Client-side routes (/margin, /capacity, …) have no file on disk and must
+   * receive the shell so the router can take over.
+   *
+   * The `/api/` guard is repeated here deliberately. Without it an unknown API
+   * path — a typo, a renamed endpoint, an older client — falls through to this
+   * fallback and returns **HTTP 200 with the SPA's HTML**. That is close to the
+   * worst possible failure for an API consumer: `response.ok` is true, so
+   * nothing treats it as an error, and the caller then fails on `JSON.parse`
+   * with "Unexpected token '<'" a long way from the actual cause. The MCP
+   * server, the CLI and Piggy all consume this API and would all have hit it.
+   *
+   * Confirmed against production before fixing: an authenticated GET to
+   * /api/keys (the real path is /api/api-keys) returned 200 text/html.
+   */
+  app.get('*', async (c, next) => {
+    if (new URL(c.req.url).pathname.startsWith('/api/')) return next();
+    return serveStatic({ path: './apps/web/dist/index.html' })(c, next);
+  });
   console.log('[pig] serving front end from', webDist);
 }
 
diff --git a/apps/api/test/auth-provider.test.ts b/apps/api/test/auth-provider.test.ts
index d7c4d98..bdc9d21 100644
--- a/apps/api/test/auth-provider.test.ts
+++ b/apps/api/test/auth-provider.test.ts
@@ -1,101 +1,214 @@
 /**
- * Tests for the identity-provider boundary.
+ * Tests for the OIDC authentication provider.
  *
- * These cases pin the trust decisions shared by protected requests and profile
- * creation. Membership remains deliberately outside this module.
+ * This is the code that decides whether a stranger is who they claim to be, so
+ * the cases below are mostly about what it must **refuse**. A provider that
+ * accepts a token it should not is not a bug you find in staging.
+ *
+ * Keys are generated per test and the JWKS is served from a local HTTP server,
+ * so these run offline and deterministically — no network, no fixtures that
+ * expire.
  */
 import { strict as assert } from 'node:assert';
-import { generateKeyPairSync, type KeyObject } from 'node:crypto';
+import { after, before, describe, it } from 'node:test';
 import { createServer, type Server } from 'node:http';
 import type { AddressInfo } from 'node:net';
-import { after, before, describe, it } from 'node:test';
-import { exportJWK, SignJWT } from 'jose';
-import {
-  createSupabaseAuthProvider,
-  type AuthProvider,
-} from '../src/lib/auth-provider';
+import { SignJWT, exportJWK, generateKeyPair, type JWK } from 'jose';
+import { createOidcAuthProvider, createConfiguredAuthProvider } from '../src/lib/auth-provider';
 
-describe('Supabase auth provider', () => {
-  let server: Server;
-  let provider: AuthProvider;
-  let issuer: string;
-  let privateKey: KeyObject;
+let server: Server;
+let origin: string;
+// Derived from jose rather than referencing the DOM `CryptoKey` type, which
+// is not in this package's type lib.
+type SigningKey = Awaited<ReturnType<typeof generateKeyPair>>['privateKey'];
 
-  before(async () => {
-    const keys = generateKeyPairSync('rsa', { modulusLength: 2048 });
-    privateKey = keys.privateKey;
-    const publicJwk = await exportJWK(keys.publicKey);
+let privateKey: SigningKey;
+let otherPrivateKey: SigningKey;
+let jwks: { keys: JWK[] };
+/** Flipped per test to exercise discovery failures. */
+let discoveryStatus = 200;
+let serveDiscovery = true;
 
-    server = createServer((request, response) => {
-      if (request.url !== '/auth/v1/.well-known/jwks.json') {
-        response.writeHead(404).end();
+before(async () => {
+  const pair = await generateKeyPair('RS256');
+  const other = await generateKeyPair('RS256');
+  privateKey = pair.privateKey;
+  otherPrivateKey = other.privateKey;
+
+  const publicJwk = await exportJWK(pair.publicKey);
+  publicJwk.kid = 'test-key';
+  publicJwk.alg = 'RS256';
+  jwks = { keys: [publicJwk] };
+
+  server = createServer((req, res) => {
+    if (req.url === '/.well-known/openid-configuration') {
+      if (!serveDiscovery || discoveryStatus !== 200) {
+        res.writeHead(discoveryStatus === 200 ? 404 : discoveryStatus);
+        res.end('{}');
         return;
       }
-      response.setHeader('content-type', 'application/json');
-      response.end(
-        JSON.stringify({
-          keys: [{ ...publicJwk, alg: 'RS256', kid: 'test-key', use: 'sig' }],
-        }),
-      );
-    });
-
-    await new Promise<void>((resolve, reject) => {
-      server.once('error', reject);
-      server.listen(0, '127.0.0.1', resolve);
-    });
-
-    const address = server.address() as AddressInfo;
-    const supabaseUrl = `http://127.0.0.1:${address.port}`;
-    issuer = `${supabaseUrl}/auth/v1`;
-    provider = createSupabaseAuthProvider(supabaseUrl);
+      res.writeHead(200, { 'content-type': 'application/json' });
+      res.end(JSON.stringify({ issuer: origin, jwks_uri: `${origin}/jwks` }));
+      return;
+    }
+    if (req.url === '/jwks') {
+      res.writeHead(200, { 'content-type': 'application/json' });
+      res.end(JSON.stringify(jwks));
+      return;
+    }
+    res.writeHead(404);
+    res.end();
   });
 
-  after(
-    () =>
-      new Promise<void>((resolve, reject) => {
-        server.close((error) => (error ? reject(error) : resolve()));
-      }),
-  );
+  await new Promise<void>((resolve) => server.listen(0, '127.0.0.1', resolve));
+  origin = `http://127.0.0.1:${(server.address() as AddressInfo).port}`;
+});
 
-  async function sign(claims: Record<string, unknown>, tokenIssuer = issuer): Promise<string> {
-    return new SignJWT(claims)
-      .setProtectedHeader({ alg: 'RS256', kid: 'test-key' })
-      .setIssuer(tokenIssuer)
-      .setExpirationTime('5m')
-      .sign(privateKey);
-  }
+after(() => server?.close());
 
-  it('returns only the verified external identity claims', async () => {
-    const token = await sign({ sub: 'provider-user-1', email: 'Owner@Example.com' });
+async function mint(
+  claims: Record<string, unknown>,
+  opts: { key?: SigningKey; issuer?: string; expiresIn?: string } = {},
+) {
+  return new SignJWT(claims)
+    .setProtectedHeader({ alg: 'RS256', kid: 'test-key' })
+    .setIssuedAt()
+    .setIssuer(opts.issuer ?? origin)
+    .setExpirationTime(opts.expiresIn ?? '5m')
+    .sign(opts.key ?? privateKey);
+}
 
-    assert.deepEqual(await provider.verifyAccessToken(token), {
-      subject: 'provider-user-1',
-      email: 'Owner@Example.com',
-    });
+describe('OIDC provider — what it accepts', () => {
+  it('verifies a well-formed token and returns subject and email', async () => {
+    const provider = createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+    const token = await mint({ sub: 'user-1', email: 'Person@Example.com', aud: 'pig' });
+    const identity = await provider.verifyAccessToken(token);
+
+    assert.equal(identity.subject, 'user-1');
+    // Lower-cased, because PIG keys membership on the address and
+    // Person@ and person@ are the same person.
+    assert.equal(identity.email, 'person@example.com');
   });
 
-  it('rejects a correctly signed token issued for a different identity provider', async () => {
-    // Signature validity alone is insufficient: without the issuer check, a
-    // sibling deployment using the same key could authenticate here.
-    const token = await sign({ sub: 'provider-user-1' }, 'https://other.example/auth/v1');
-
-    await assert.rejects(provider.verifyAccessToken(token));
+  it('discovers the JWKS from the issuer when no explicit URI is given', async () => {
+    const provider = createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+    const token = await mint({ sub: 'user-2', email: 'a@b.com', aud: 'pig' });
+    assert.equal((await provider.verifyAccessToken(token)).subject, 'user-2');
   });
 
-  it('accepts a subject without email for protected requests', async () => {
-    // Existing members are joined by subject. Email is required only by the
-    // invite-gated profile flow, not as an extra condition on every request.
-    const token = await sign({ sub: 'provider-user-2' });
-
-    assert.deepEqual(await provider.verifyAccessToken(token), {
-      subject: 'provider-user-2',
-      email: undefined,
-    });
+  it('skips discovery entirely when the JWKS URI is configured', async () => {
+    // The air-gapped path: no discovery request is made at all.
+    serveDiscovery = false;
+    try {
+      const provider = createOidcAuthProvider({
+        issuer: origin,
+        jwksUri: `${origin}/jwks`,
+        audience: 'pig',
+      });
+      const token = await mint({ sub: 'user-3', email: 'a@b.com', aud: 'pig' });
+      assert.equal((await provider.verifyAccessToken(token)).subject, 'user-3');
+    } finally {
+      serveDiscovery = true;
+    }
   });
 
-  it('rejects a token with no stable subject', async () => {
-    const token = await sign({ email: 'owner@example.com' });
+  it('falls back through email claims for providers that do not send `email`', async () => {
+    const provider = createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+    const token = await mint({ sub: 'user-4', preferred_username: 'someone@corp.com', aud: 'pig' });
+    assert.equal((await provider.verifyAccessToken(token)).email, 'someone@corp.com');
+  });
 
-    await assert.rejects(provider.verifyAccessToken(token));
+  it('ignores a preferred_username that is not an address', async () => {
+    // A bare username must never become an account identity — PIG keys
+    // membership on the email, and "jsmith" is not one.
+    const provider = createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+    const token = await mint({ sub: 'user-5', preferred_username: 'jsmith', aud: 'pig' });
+    assert.equal((await provider.verifyAccessToken(token)).email, undefined);
+  });
+});
+
+describe('OIDC provider — what it must refuse', () => {
+  const provider = () => createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+
+  it('rejects a token signed by a different key', async () => {
+    const token = await mint({ sub: 'x', aud: 'pig' }, { key: otherPrivateKey });
+    await assert.rejects(() => provider().verifyAccessToken(token));
+  });
+
+  it('rejects a token from a different issuer', async () => {
+    const token = await mint({ sub: 'x', aud: 'pig' }, { issuer: 'https://evil.example' });
+    await assert.rejects(() => provider().verifyAccessToken(token));
+  });
+
+  it('rejects a token minted for a DIFFERENT application in the same tenant', async () => {
+    // The case the audience check exists for. Without it, a token issued for
+    // any other internal tool would be accepted as a PIG session.
+    const token = await mint({ sub: 'x', aud: 'some-other-app' });
+    await assert.rejects(() => provider().verifyAccessToken(token));
+  });
+
+  it('rejects an expired token', async () => {
+    const token = await mint({ sub: 'x', aud: 'pig' }, { expiresIn: '-1m' });
+    await assert.rejects(() => provider().verifyAccessToken(token));
+  });
+
+  it('rejects a token with no subject', async () => {
+    const token = await mint({ aud: 'pig' });
+    await assert.rejects(() => provider().verifyAccessToken(token));
+  });
+
+  it('rejects garbage', async () => {
+    await assert.rejects(() => provider().verifyAccessToken('not-a-token'));
+  });
+
+  it('surfaces a discovery failure and retries on the next call', async () => {
+    const p = createOidcAuthProvider({ issuer: origin, audience: 'pig' });
+    const token = await mint({ sub: 'user-6', aud: 'pig' });
+
+    discoveryStatus = 503;
+    await assert.rejects(() => p.verifyAccessToken(token));
+
+    // The failure must not be cached for the process lifetime: an identity
+    // provider that reboots should not permanently break PIG.
+    discoveryStatus = 200;
+    assert.equal((await p.verifyAccessToken(token)).subject, 'user-6');
+  });
+});
+
+describe('createConfiguredAuthProvider', () => {
+  it('prefers OIDC when both are configured', () => {
+    const provider = createConfiguredAuthProvider({
+      SUPABASE_URL: 'https://project.supabase.co',
+      PIG_OIDC_ISSUER: 'https://id.customer.internal',
+      PIG_OIDC_JWKS_URI: undefined,
+      PIG_OIDC_AUDIENCE: 'pig',
+      PIG_OIDC_EMAIL_CLAIMS: undefined,
+    });
+    // So an on-prem install can leave the hosted values in place without them
+    // silently taking over.
+    assert.equal(provider?.name, 'oidc');
+  });
+
+  it('uses Supabase when only it is configured', () => {
+    const provider = createConfiguredAuthProvider({
+      SUPABASE_URL: 'https://project.supabase.co',
+      PIG_OIDC_ISSUER: undefined,
+      PIG_OIDC_JWKS_URI: undefined,
+      PIG_OIDC_AUDIENCE: undefined,
+      PIG_OIDC_EMAIL_CLAIMS: undefined,
+    });
+    assert.equal(provider?.name, 'supabase');
+  });
+
+  it('returns null when neither is configured', () => {
+    const provider = createConfiguredAuthProvider({
+      SUPABASE_URL: undefined,
+      PIG_OIDC_ISSUER: undefined,
+      PIG_OIDC_JWKS_URI: undefined,
+      PIG_OIDC_AUDIENCE: undefined,
+      PIG_OIDC_EMAIL_CLAIMS: undefined,
+    });
+    // The production guard in config.ts turns this into a refusal to start.
+    assert.equal(provider, null);
   });
 });
diff --git a/apps/web/src/App.tsx b/apps/web/src/App.tsx
index 4974c1c..dc2f05e 100644
--- a/apps/web/src/App.tsx
+++ b/apps/web/src/App.tsx
@@ -12,6 +12,7 @@ import { CreateProfile } from '@/pages/CreateProfile';
 import { Register } from '@/pages/Register';
 import { PiggyMark } from '@/components/PiggyMark';
 import { EmptyState } from '@/components/ui';
+import { Toaster } from '@/components/ui/sonner';
 import { usePageTitle } from '@/lib/title';
 
 const Overview = lazy(() => import('@/pages/Overview').then(({ Overview }) => ({ default: Overview })));
@@ -79,6 +80,8 @@ export function App() {
         <BrowserRouter>
           <AuthGate config={config} />
         </BrowserRouter>
+        {/* Inside ThemeProvider: the host reads the resolved light/dark value. */}
+        <Toaster />
       </ThemeProvider>
     </QueryClientProvider>
   );
diff --git a/apps/web/src/components/AdminSettings.tsx b/apps/web/src/components/AdminSettings.tsx
index 71103a1..4ef6b34 100644
--- a/apps/web/src/components/AdminSettings.tsx
+++ b/apps/web/src/components/AdminSettings.tsx
@@ -67,7 +67,7 @@ export function AdminSettings() {
       <div className="relative overflow-hidden border-b border-border bg-surface-2 px-4 py-5 sm:px-6">
         <div className="absolute -right-12 -top-20 size-48 rounded-full bg-accent-subtle blur-3xl" aria-hidden />
         <div className="relative flex items-start gap-3">
-          <div className="flex size-10 shrink-0 items-center justify-center rounded-xl bg-accent text-accent-on">
+          <div className="flex size-10 shrink-0 items-center justify-center rounded-xl bg-primary text-accent-on">
             <ShieldCheck aria-hidden />
           </div>
           <div className="min-w-0">
diff --git a/apps/web/src/components/AllocationSheet.tsx b/apps/web/src/components/AllocationSheet.tsx
index 2e16205..c811951 100644
--- a/apps/web/src/components/AllocationSheet.tsx
+++ b/apps/web/src/components/AllocationSheet.tsx
@@ -37,6 +37,7 @@ import {
 } from '@/components/ui/sheet';
 import { Textarea } from '@/components/ui/textarea';
 import { ApiError, compactNumber, get, money, percent, post, shortDate } from '@/lib/api';
+import { toast } from 'sonner';
 
 export interface AvailabilityRow {
   commitmentId: string;
@@ -295,10 +296,24 @@ export function AllocationSheet({
           })
         : post<AllocationRecord>('/api/allocations', { ...body, status: values.status });
     },
-    onSuccess: async () => {
+    onSuccess: async (allocation, values) => {
       await refresh();
       onOpenChange(false);
+      // The sheet closes on success, so without this the only evidence the
+      // write landed is a number moving somewhere off-screen. Report what
+      // actually happened, in the units the seller was thinking in.
+      const hours = Number(allocation.gpuHours ?? values.gpuHours).toLocaleString();
+      toast.success(
+        values.kind === 'hold' ? 'Capacity held' : 'Capacity allocated',
+        {
+          description:
+            values.kind === 'hold'
+              ? `${hours} GPU-hours reserved. The hold releases automatically when it expires.`
+              : `${hours} GPU-hours committed. Margin and utilisation have been updated.`,
+        },
+      );
     },
+    onError: (error) => toast.error('Could not save', { description: errorMessage(error) }),
   });
   const release = useMutation({
     mutationFn: (id: string) =>
@@ -306,8 +321,16 @@ export function AllocationSheet({
         reason: releaseReason.trim() || undefined,
       }),
     onMutate: () => setReleaseError(null),
-    onSuccess: refresh,
-    onError: (error) => setReleaseError(errorMessage(error)),
+    onSuccess: async () => {
+      await refresh();
+      toast.success('Hold released', {
+        description: 'The capacity is available to sell again.',
+      });
+    },
+    onError: (error) => {
+      setReleaseError(errorMessage(error));
+      toast.error('Could not release the hold', { description: errorMessage(error) });
+    },
   });
 
   const chooseCommitment = (id: string) => {
@@ -526,8 +549,8 @@ function CommitmentContext({ row, detail, match, quotedPrice }: { row: Availabil
         {match ? <Badge tone={match.score > 0.7 ? 'positive' : 'neutral'}>{percent(match.score)} fit</Badge> : null}
       </div>
       <div className="mt-4 flex h-2 overflow-hidden rounded-full bg-surface">
-        <div className="bg-accent" style={{ width: `${Math.min(100, soldPct * 100)}%` }} />
-        <div className="bg-accent/35" style={{ width: `${Math.min(100 - soldPct * 100, heldPct * 100)}%` }} />
+        <div className="bg-primary" style={{ width: `${Math.min(100, soldPct * 100)}%` }} />
+        <div className="bg-primary/35" style={{ width: `${Math.min(100 - soldPct * 100, heldPct * 100)}%` }} />
       </div>
       <div className="mt-2 grid grid-cols-3 gap-2 text-xs">
         <div><p className="text-muted">Sold</p><p className="nums mt-0.5 font-medium">{compactNumber(row.soldGpuHours)} hrs</p></div>
diff --git a/apps/web/src/components/GoogleSheetsSource.tsx b/apps/web/src/components/GoogleSheetsSource.tsx
index 104d4d8..1aa91cd 100644
--- a/apps/web/src/components/GoogleSheetsSource.tsx
+++ b/apps/web/src/components/GoogleSheetsSource.tsx
@@ -137,7 +137,7 @@ export function GoogleSheetsSource({ onLoaded }: { onLoaded(table: GoogleParsedT
           {files.isLoading ? <Skeleton className="h-40" /> : files.isError ? <ErrorText error={files.error} /> : files.data?.files.length === 0 ? <EmptyState title="No spreadsheets found" description="Try another name or confirm this Google account can see the spreadsheet." /> : (
             <div className="grid gap-2 sm:grid-cols-2">
               {files.data?.files.map((file) => (
-                <button key={file.id} type="button" onClick={() => { setSpreadsheetId(file.id); setSheetId(''); }} className={spreadsheetId === file.id ? 'tap min-w-0 rounded-lg border border-accent bg-accent-subtle p-3 text-left' : 'tap min-w-0 rounded-lg border border-border p-3 text-left hover:bg-surface-2'}>
+                <button key={file.id} type="button" onClick={() => { setSpreadsheetId(file.id); setSheetId(''); }} className={spreadsheetId === file.id ? 'tap min-w-0 rounded-lg border border-primary bg-accent-subtle p-3 text-left' : 'tap min-w-0 rounded-lg border border-border p-3 text-left hover:bg-surface-2'}>
                   <p className="truncate text-sm font-medium">{file.name}</p>
                   <p className="mt-1 text-xs text-muted">{file.modifiedTime ? `Modified ${relativeTime(file.modifiedTime)}` : 'Modified time unavailable'}</p>
                 </button>
diff --git a/apps/web/src/components/PiggyChat.tsx b/apps/web/src/components/PiggyChat.tsx
index 2efd4a5..8afae66 100644
--- a/apps/web/src/components/PiggyChat.tsx
+++ b/apps/web/src/components/PiggyChat.tsx
@@ -264,7 +264,7 @@ function PiggyChatPanel({
 
 function ChatMessage({ message }: { message: TranscriptMessage }) {
   if (message.role === 'user') {
-    return <div className="ml-auto max-w-[88%] rounded-2xl rounded-br-md bg-accent px-4 py-3 text-sm text-accent-on"><p className="whitespace-pre-wrap">{message.content}</p></div>;
+    return <div className="ml-auto max-w-[88%] rounded-2xl rounded-br-md bg-primary px-4 py-3 text-sm text-accent-on"><p className="whitespace-pre-wrap">{message.content}</p></div>;
   }
   return (
     <div className="flex gap-3">
diff --git a/apps/web/src/components/ui/index.tsx b/apps/web/src/components/ui/index.tsx
index 70c4a95..1822b97 100644
--- a/apps/web/src/components/ui/index.tsx
+++ b/apps/web/src/components/ui/index.tsx
@@ -83,8 +83,22 @@ Input.displayName = 'Input';
 
 // --------------------------------------------------------------------- card
 
+/**
+ * `min-w-0` is on the base class deliberately, not left to each call site.
+ *
+ * A grid or flex child defaults to `min-width: auto`, meaning it refuses to
+ * shrink below its content — and cards routinely contain something
+ * unshrinkable (a `tabular-nums` figure, a `whitespace-nowrap` badge, a long
+ * unbroken title). The result is a card wider than its column, which drags the
+ * whole page into horizontal scrolling on a phone.
+ *
+ * This has now been fixed three separate times at individual call sites, which
+ * is the signal that it belongs here instead. `min-width: 0` is inert for a
+ * block-level card outside a flex or grid container, so applying it always
+ * costs nothing and removes the entire class of bug.
+ */
 export function Card({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn('card', className)} {...props} />;
+  return <div className={cn('card min-w-0', className)} {...props} />;
 }
 
 export function CardHeader({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
diff --git a/apps/web/src/components/ui/sonner.tsx b/apps/web/src/components/ui/sonner.tsx
index 1128edf..b6bdf41 100644
--- a/apps/web/src/components/ui/sonner.tsx
+++ b/apps/web/src/components/ui/sonner.tsx
@@ -1,29 +1,43 @@
-import { useTheme } from "next-themes"
-import { Toaster as Sonner } from "sonner"
+/**
+ * Toast host.
+ *
+ * The shadcn original reads the theme from `next-themes`, which PIG does not
+ * use — it has its own provider so a user's choice can be persisted server-side
+ * and follow them between devices. Importing next-themes here would have thrown
+ * at module load, which is why the Toaster was never mounted and every mutation
+ * in the app completed in silence.
+ *
+ * Rewired to PIG's `useTheme`, which already resolves `system` to a concrete
+ * light or dark value.
+ */
+import { Toaster as Sonner, type ToasterProps } from 'sonner';
+import { useTheme } from '@/lib/theme';
 
-type ToasterProps = React.ComponentProps<typeof Sonner>
-
-const Toaster = ({ ...props }: ToasterProps) => {
-  const { theme = "system" } = useTheme()
+export function Toaster(props: ToasterProps) {
+  const { resolved } = useTheme();
 
   return (
     <Sonner
-      theme={theme as ToasterProps["theme"]}
+      theme={resolved}
       className="toaster group"
+      // Above the sheets and dialogs it confirms, and clear of the phone tab
+      // bar and the home indicator beneath it.
+      position="bottom-right"
+      offset="1rem"
+      style={{ marginBottom: 'calc(var(--safe-bottom) + 4rem)' }}
       toastOptions={{
         classNames: {
           toast:
-            "group toast group-[.toaster]:bg-background group-[.toaster]:text-foreground group-[.toaster]:border-border group-[.toaster]:shadow-lg",
-          description: "group-[.toast]:text-muted-foreground",
-          actionButton:
-            "group-[.toast]:bg-primary group-[.toast]:text-primary-foreground",
-          cancelButton:
-            "group-[.toast]:bg-muted group-[.toast]:text-muted-foreground",
+            'group toast group-[.toaster]:bg-surface group-[.toaster]:text-fg ' +
+            'group-[.toaster]:border-border group-[.toaster]:shadow-lg',
+          description: 'group-[.toast]:text-muted',
+          actionButton: 'group-[.toast]:bg-primary group-[.toast]:text-primary-foreground',
+          cancelButton: 'group-[.toast]:bg-surface-2 group-[.toast]:text-muted',
+          error: 'group-[.toaster]:text-danger',
+          success: 'group-[.toaster]:text-positive',
         },
       }}
       {...props}
     />
-  )
+  );
 }
-
-export { Toaster }
diff --git a/apps/web/src/pages/Capacity.tsx b/apps/web/src/pages/Capacity.tsx
index 26ff986..05a545f 100644
--- a/apps/web/src/pages/Capacity.tsx
+++ b/apps/web/src/pages/Capacity.tsx
@@ -161,9 +161,9 @@ function CapacityCard({ row, writable, onAllocate }: { row: AvailabilityRow; wri
             bar made mostly of unconverted holds is a lie a seller would act on. */}
         <div>
           <div className="flex h-2 overflow-hidden rounded-full bg-surface-2">
-            <div className="bg-accent" style={{ width: `${Math.min(100, soldPct * 100)}%` }} />
+            <div className="bg-primary" style={{ width: `${Math.min(100, soldPct * 100)}%` }} />
             <div
-              className="bg-accent/35"
+              className="bg-primary/35"
               style={{ width: `${Math.min(100 - soldPct * 100, heldPct * 100)}%` }}
             />
           </div>
diff --git a/apps/web/src/pages/CreateProfile.tsx b/apps/web/src/pages/CreateProfile.tsx
index 758cb47..d3ced5e 100644
--- a/apps/web/src/pages/CreateProfile.tsx
+++ b/apps/web/src/pages/CreateProfile.tsx
@@ -95,7 +95,7 @@ export function CreateProfile({
                       className={[
                         'flex cursor-pointer items-start gap-3 rounded-lg border p-3 transition-colors',
                         team === value
-                          ? 'border-accent bg-accent-subtle'
+                          ? 'border-primary bg-accent-subtle'
                           : 'border-border hover:bg-surface-2',
                       ].join(' ')}
                     >
diff --git a/apps/web/src/pages/FactReview.tsx b/apps/web/src/pages/FactReview.tsx
index f5c9a83..b1a33d4 100644
--- a/apps/web/src/pages/FactReview.tsx
+++ b/apps/web/src/pages/FactReview.tsx
@@ -15,6 +15,7 @@ import { Button } from '@/components/ui/button';
 import { get, patch, relativeTime } from '@/lib/api';
 import { can } from '@/lib/permissions';
 import { usePageTitle } from '@/lib/title';
+import { toast } from 'sonner';
 
 interface ReviewItem {
   fact: SourcedFact;
@@ -74,7 +75,16 @@ export function FactReview() {
   const decision = useMutation({
     mutationFn: ({ id, status }: { id: string; status: 'approved' | 'dismissed' }) =>
       patch<DecisionResponse>(`/api/facts/${id}/decision`, { status }),
-    onSuccess: async () => {
+    onSuccess: async (_result, variables) => {
+      toast.success(
+        variables.status === 'approved' ? 'Evidence accepted' : 'Claim dismissed',
+        {
+          description:
+            variables.status === 'approved'
+              ? 'Recorded as reviewed. Applying it to the record is a separate, field-aware step.'
+              : 'It will not be proposed again from the same evidence.',
+        },
+      );
       await queryClient.invalidateQueries({ queryKey: ['facts', 'proposed'] });
     },
   });
@@ -99,7 +109,7 @@ export function FactReview() {
         </Badge>
       </header>
 
-      <Card className="overflow-hidden border-accent/30 bg-accent-subtle/40">
+      <Card className="overflow-hidden border-primary/30 bg-accent-subtle/40">
         <CardContent className="flex gap-3 p-4 sm:p-5">
           <FileCheck2 className="mt-0.5 size-5 shrink-0 text-accent-fg" aria-hidden />
           <div className="min-w-0">
diff --git a/apps/web/src/pages/Imports.tsx b/apps/web/src/pages/Imports.tsx
index e77cc97..5a6af92 100644
--- a/apps/web/src/pages/Imports.tsx
+++ b/apps/web/src/pages/Imports.tsx
@@ -145,7 +145,7 @@ export function Imports() {
               type="button"
               aria-pressed={entity === candidate}
               onClick={() => resetForEntity(candidate)}
-              className={entity === candidate ? 'tap card min-w-0 border-accent p-4 text-left ring-1 ring-accent' : 'tap card min-w-0 p-4 text-left'}
+              className={entity === candidate ? 'tap card min-w-0 border-primary p-4 text-left ring-1 ring-primary' : 'tap card min-w-0 p-4 text-left'}
             >
               <p className="font-semibold">{candidateDefinition.label}</p>
               <p className="mt-1 text-xs leading-relaxed text-muted">{candidateDefinition.description}</p>
diff --git a/apps/web/src/pages/Pipeline.tsx b/apps/web/src/pages/Pipeline.tsx
index 39a0acb..e5b83da 100644
--- a/apps/web/src/pages/Pipeline.tsx
+++ b/apps/web/src/pages/Pipeline.tsx
@@ -184,7 +184,7 @@ function PipelineBoard<T extends { id: string; stage: string; updatedAt: string
                 className={[
                   'tap shrink-0 rounded-full px-3.5 text-sm font-medium transition-colors',
                   stage === currentStage
-                    ? 'bg-accent text-accent-on'
+                    ? 'bg-primary text-accent-on'
                     : 'bg-surface-2 text-muted',
                 ].join(' ')}
               >
diff --git a/apps/web/src/pages/Register.tsx b/apps/web/src/pages/Register.tsx
index 2a35b37..4583e50 100644
--- a/apps/web/src/pages/Register.tsx
+++ b/apps/web/src/pages/Register.tsx
@@ -172,7 +172,7 @@ export function Register({
                     className={[
                       'flex cursor-pointer items-start gap-3 rounded-lg border p-3 transition-colors',
                       team === value
-                        ? 'border-accent bg-accent-subtle'
+                        ? 'border-primary bg-accent-subtle'
                         : 'border-border hover:bg-surface-2',
                     ].join(' ')}
                   >
diff --git a/apps/web/src/pages/Settings.tsx b/apps/web/src/pages/Settings.tsx
index 9d34d09..8ca9113 100644
--- a/apps/web/src/pages/Settings.tsx
+++ b/apps/web/src/pages/Settings.tsx
@@ -14,6 +14,7 @@ import { Badge, Button, Card, CardContent, CardHeader, CardTitle, Input } from '
 import { useState } from 'react';
 import { usePageTitle } from '@/lib/title';
 import { AdminSettings } from '@/components/AdminSettings';
+import { toast } from 'sonner';
 
 interface Me {
   id: string;
@@ -93,7 +94,7 @@ function Appearance() {
                   title={option.label}
                   className={[
                     'tap relative flex items-center gap-2 rounded-lg border px-3 py-2 text-sm font-medium transition-colors',
-                    selected ? 'border-accent bg-accent-subtle' : 'border-border hover:bg-surface-2',
+                    selected ? 'border-primary bg-accent-subtle' : 'border-border hover:bg-surface-2',
                   ].join(' ')}
                 >
                   {/*
@@ -144,7 +145,11 @@ function Profile({ me }: { me: Me | undefined }) {
       void queryClient.invalidateQueries({ queryKey: ['me'] });
       setName('');
       setTitle('');
+      // The form clears itself on success, which without confirmation reads as
+      // though the input was discarded rather than saved.
+      toast.success('Profile saved');
     },
+    onError: () => toast.error('Could not save your profile'),
   });
 
   if (!me) return null;
diff --git a/apps/web/tailwind.config.js b/apps/web/tailwind.config.js
index 61a0260..433e17c 100644
--- a/apps/web/tailwind.config.js
+++ b/apps/web/tailwind.config.js
@@ -20,8 +20,22 @@ export default {
         foreground: 'hsl(var(--fg))',
         muted: 'hsl(var(--muted))',
         'muted-foreground': 'hsl(var(--muted))',
-        accent: 'hsl(var(--accent))',
-        'accent-foreground': 'hsl(var(--accent-on))',
+        /*
+         * shadcn's `accent` is its SUBTLE hover/selected surface — dropdown
+         * items, command rows, ghost-button hover. It is not the brand colour;
+         * that is `primary`, mapped below.
+         *
+         * Mapping `accent` to --accent (the brand) inverted this, so every
+         * hover state painted a full-strength brand block: in dark mode with
+         * the monochrome "pig" accent that is near-white, which made a selected
+         * command row glare. Aliased to the subtle pair instead, so shadcn
+         * primitives tint the way their authors intended while PIG's own brand
+         * fills use `primary`.
+         */
+        accent: 'hsl(var(--accent-subtle))',
+        'accent-foreground': 'hsl(var(--accent-fg))',
+        /** The brand itself, for PIG's own components that need a solid fill. */
+        brand: 'hsl(var(--accent))',
         'accent-fg': 'hsl(var(--accent-fg))',
         'accent-on': 'hsl(var(--accent-on))',
         'accent-subtle': 'hsl(var(--accent-subtle))',
diff --git a/deploy/README.md b/deploy/README.md
index e5cf3a5..aead6e7 100644
--- a/deploy/README.md
+++ b/deploy/README.md
@@ -98,6 +98,34 @@ applied. Take a dump before a major upgrade anyway:
 docker compose -p pig exec db pg_dump -U pig pig | gzip > pig-$(date +%F).sql.gz
 ```
 
+## On-premises: using your own identity provider
+
+PIG authenticates against any standards-compliant OIDC provider, which is how
+an install inside your own network works. Set:
+
+```bash
+PIG_OIDC_ISSUER=https://id.yourcompany.internal
+PIG_OIDC_AUDIENCE=pig          # the client/app id you registered for PIG
+```
+
+That is usually the whole configuration — the JWKS is discovered from the
+issuer. On an air-gapped network, set `PIG_OIDC_JWKS_URI` too and no discovery
+request is made.
+
+`PIG_OIDC_ISSUER` takes precedence over `SUPABASE_URL`, so the hosted values
+can stay in the environment file without quietly taking over.
+
+**Set the audience.** Without it, any token your provider issued for any
+application in the same tenant verifies here — a token minted for an unrelated
+internal tool would be accepted as a PIG session. PIG warns about this at boot
+but cannot refuse, because some providers legitimately issue single-audience
+tokens.
+
+**Provisioning stays in PIG.** Authenticating proves who someone is; it does
+not make them a member. They still need an invite, and their team and role live
+in PIG's database. That is deliberate — your directory should not have to model
+"supply lead versus demand member" for one application.
+
 ## A note on the auth project
 
 PIG verifies JWTs but authorizes from its own `users` table. If the Supabase
diff --git a/packages/db/src/seed/demo.ts b/packages/db/src/seed/demo.ts
index cb701cc..adc3d97 100644
--- a/packages/db/src/seed/demo.ts
+++ b/packages/db/src/seed/demo.ts
@@ -41,6 +41,7 @@ import { createDatabase } from '../client';
 import {
   accounts,
   activities,
+  facts,
   allocations,
   capacityCommitments,
   capacityRequests,
@@ -660,7 +661,166 @@ async function seedDemo() {
     }
   }
 
+  // -------------------------------------------------- agent-derived facts
+  //
+  // Without these the fact-review queue and every provenance tooltip are
+  // empty, which hides the thing that makes an agent-written CRM trustworthy:
+  // that each claim carries a score, a band, evidence and a source, and that
+  // only verified claims apply themselves.
+  //
+  // The mix is deliberate. Two `applied` facts show what a confident agent
+  // writes unprompted; four `proposed` show what waits for a human; one is a
+  // near-miss that a reviewer should reject, so the queue is not a row of
+  // obvious approvals.
+  const factSeeds: {
+    accountDomain?: string;
+    contactName?: string;
+    field: string;
+    value: string;
+    score: string;
+    band: 'verified' | 'probable' | 'possible';
+    status: 'applied' | 'proposed';
+    method: string;
+    sourceUrl?: string;
+    evidence: Record<string, unknown>;
+  }[] = [
+    {
+      accountDomain: 'coreweave.com',
+      field: 'supplierType',
+      value: 'neocloud',
+      score: '0.960',
+      band: 'verified',
+      status: 'applied',
+      method: 'web_search',
+      sourceUrl: 'https://www.coreweave.com/',
+      evidence: {
+        quote: 'Describes itself as an AI hyperscaler providing GPU cloud infrastructure.',
+        corroboration: 2,
+      },
+    },
+    {
+      accountDomain: 'nebius.com',
+      field: 'jurisdiction',
+      value: 'European Union',
+      score: '0.910',
+      band: 'verified',
+      status: 'applied',
+      method: 'web_search',
+      sourceUrl: 'https://nebius.com/',
+      evidence: {
+        quote: 'Operates a datacentre in Finland, inside the EU data-residency perimeter.',
+        matters: 'Determines eligibility for customers with EU residency requirements.',
+      },
+    },
+    {
+      accountDomain: 'crusoe.ai',
+      field: 'certifications',
+      value: 'SOC 2 Type II',
+      score: '0.720',
+      band: 'probable',
+      status: 'proposed',
+      method: 'web_search',
+      sourceUrl: 'https://crusoe.ai/',
+      evidence: {
+        quote: 'A trust page references SOC 2, but the report scope and observation window are not stated.',
+        caution: 'Scope matters — a report can cover only some products.',
+      },
+    },
+    {
+      accountDomain: 'lambda.ai',
+      field: 'supplierType',
+      value: 'neocloud',
+      score: '0.680',
+      band: 'probable',
+      status: 'proposed',
+      method: 'web_search',
+      sourceUrl: 'https://lambda.ai/',
+      evidence: { quote: 'Markets GPU cloud and on-premises clusters.' },
+    },
+    {
+      contactName: 'Dana Whitfield',
+      field: 'title',
+      value: 'VP Infrastructure',
+      score: '0.540',
+      band: 'possible',
+      status: 'proposed',
+      method: 'inference',
+      evidence: {
+        reasoning: 'A conference bio lists a VP title; the CRM records Head of Infrastructure.',
+        conflict: 'Sources disagree, and neither is dated.',
+      },
+    },
+    {
+      accountDomain: 'runpod.io',
+      field: 'customerSegment',
+      value: 'frontier_lab',
+      score: '0.310',
+      band: 'possible',
+      status: 'proposed',
+      method: 'inference',
+      evidence: {
+        reasoning: 'Inferred from a blog post mentioning large training runs.',
+        warning:
+          'Weak. This is a supply-side provider, not a frontier lab — a reviewer should reject it.',
+      },
+    },
+  ];
+
+  let factsAdded = 0;
+  for (const seed of factSeeds) {
+    let accountId: string | undefined;
+    let contactId: string | undefined;
+
+    if (seed.accountDomain) {
+      const [row] = await db
+        .select({ id: accounts.id })
+        .from(accounts)
+        .where(eq(accounts.domain, seed.accountDomain))
+        .limit(1);
+      accountId = row?.id;
+    }
+    if (seed.contactName) {
+      const [row] = await db
+        .select({ id: contacts.id })
+        .from(contacts)
+        .where(eq(contacts.fullName, seed.contactName))
+        .limit(1);
+      contactId = row?.id;
+    }
+    if (!accountId && !contactId) continue;
+
+    // Idempotent on the natural key: one claim per subject per field per value.
+    const [existing] = await db
+      .select({ id: facts.id })
+      .from(facts)
+      .where(
+        and(
+          accountId ? eq(facts.accountId, accountId) : eq(facts.contactId, contactId!),
+          eq(facts.field, seed.field),
+          eq(facts.value, seed.value),
+        ),
+      )
+      .limit(1);
+    if (existing) continue;
+
+    await db.insert(facts).values({
+      accountId,
+      contactId,
+      field: seed.field,
+      value: seed.value,
+      score: seed.score,
+      band: seed.band,
+      status: seed.status,
+      method: seed.method,
+      sourceUrl: seed.sourceUrl,
+      evidence: seed.evidence,
+      observedAt: at(-Math.round(Math.random() * 6) - 1),
+    });
+    factsAdded += 1;
+  }
+
   console.log('  4 capacity commitments, with sites, MSAs and negotiated SLAs');
+  console.log(`  ${factSeeds.length} agent-derived facts (${factsAdded} new) — 2 applied, 4 awaiting review`);
   console.log('  6 demand deals across the pipeline, 5 supply deals');
   console.log('  Allocations including one unconverted hold and internal research burn');
   console.log('\nEverything is prefixed "DEMO — ". Remove it with: npm run db:demo -- --clear');