diff --git a/apps/api/scripts/lint-meta/rules/ci/engine-pin-parity.ts b/apps/api/scripts/lint-meta/rules/ci/engine-pin-parity.ts
index 5bd79493..4240aa29 100644
--- a/apps/api/scripts/lint-meta/rules/ci/engine-pin-parity.ts
+++ b/apps/api/scripts/lint-meta/rules/ci/engine-pin-parity.ts
@@ -31,7 +31,12 @@ function findParentPackageJsonDir(root: string): string | null {
   }
 }
 
-export function checkEnginePinParity(root: string): IViolation[] {
+const BUN_VERSION_PIN_REGEX = /bun-version:\s*["']?([\w.+-]+)["']?/gu;
+
+export function checkEnginePinParity(
+  root: string,
+  workflowFiles: readonly string[] = []
+): IViolation[] {
   const violations: IViolation[] = [];
   const pkg = readApiPackageJson(root);
   const bunVersion = pkg?.engines?.bun;
@@ -78,17 +83,30 @@ export function checkEnginePinParity(root: string): IViolation[] {
     }
   }
 
-  const ciWorkflow = join(root, ".github", "workflows", "ci.yml");
+  /*
+   * Every GitHub Actions workflow that pins a Bun version via
+   * `setup-bun` must match engines.bun. The monorepo keeps its workflows
+   * at the repo root, not under apps/api, and a single bump can leave one
+   * of a dozen `bun-version:` literals behind — so check every occurrence
+   * in every workflow, not just the first match.
+   */
+  for (const workflow of workflowFiles) {
+    if (!existsSync(workflow)) {
+      continue;
+    }
 
-  if (existsSync(ciWorkflow)) {
-    const content = readFileSync(ciWorkflow, "utf8");
+    const content = readFileSync(workflow, "utf8");
 
-    if (!content.includes(`bun-version: ${bunVersion}`)) {
-      violations.push({
-        file: ciWorkflow,
-        rule: RULE_ID,
-        message: `CI workflow must pin bun-version: ${bunVersion} to match package.json engines.bun.`,
-      });
+    for (const match of content.matchAll(BUN_VERSION_PIN_REGEX)) {
+      const pinned = match[1];
+
+      if (pinned !== undefined && pinned !== bunVersion) {
+        violations.push({
+          file: workflow,
+          rule: RULE_ID,
+          message: `CI workflow pins bun-version: ${pinned} but must match package.json engines.bun (${bunVersion}).`,
+        });
+      }
     }
   }
 
@@ -101,7 +119,7 @@ export const enginePinParityRule: IMetaRule = {
   category: "ci",
   description:
     "Bun version pin must stay aligned across package.json, Docker, and CI.",
-  run({ root }) {
-    return checkEnginePinParity(root);
+  run({ root, workflowFiles }) {
+    return checkEnginePinParity(root, workflowFiles);
   },
 };
diff --git a/apps/api/tests/lint-meta/lint-meta.test.ts b/apps/api/tests/lint-meta/lint-meta.test.ts
index 3a34d7cf..62fb035e 100644
--- a/apps/api/tests/lint-meta/lint-meta.test.ts
+++ b/apps/api/tests/lint-meta/lint-meta.test.ts
@@ -1610,10 +1610,12 @@ describe("checkEnginePinParity", () => {
         workflowBun: "1.2.0",
       });
 
-      const violations = checkEnginePinParity(root);
+      const violations = checkEnginePinParity(root, [
+        join(root, ".github", "workflows", "ci.yml"),
+      ]);
 
       expect(
-        violations.some((row) => row.message.includes("bun-version: 1.3.14"))
+        violations.some((row) => row.message.includes("bun-version: 1.2.0"))
       ).toBe(true);
     } finally {
       rmSync(root, { recursive: true, force: true });
@@ -1630,13 +1632,51 @@ describe("checkEnginePinParity", () => {
         workflowBun: "1.3.14",
       });
 
-      const violations = checkEnginePinParity(root);
+      const violations = checkEnginePinParity(root, [
+        join(root, ".github", "workflows", "ci.yml"),
+      ]);
 
       expect(violations).toEqual([]);
     } finally {
       rmSync(root, { recursive: true, force: true });
     }
   });
+
+  test("flags a drifted bun-version in any of several root workflows", () => {
+    const root = mkdtempSync(join(tmpdir(), "lint-meta-engine-multi-"));
+
+    try {
+      writeFileSync(
+        join(root, PKG_JSON),
+        JSON.stringify({ engines: { bun: "1.3.14" } })
+      );
+      writeFileSync(
+        join(root, "Dockerfile"),
+        "FROM oven/bun:1.3.14-alpine@sha256:0000000000000000000000000000000000000000000000000000000000000000\n"
+      );
+      mkdirSync(join(root, ".github", "workflows"), { recursive: true });
+
+      const good = join(root, ".github", "workflows", "apps-ui-validate.yml");
+      const drifted = join(root, ".github", "workflows", "apps-api-ci.yml");
+
+      writeFileSync(
+        good,
+        "jobs:\n  a:\n    steps:\n      - uses: oven-sh/setup-bun@abc\n        with:\n          bun-version: 1.3.14\n"
+      );
+      writeFileSync(
+        drifted,
+        "jobs:\n  b:\n    steps:\n      - uses: oven-sh/setup-bun@abc\n        with:\n          bun-version: 1.2.0\n"
+      );
+
+      const violations = checkEnginePinParity(root, [good, drifted]);
+
+      expect(violations).toHaveLength(1);
+      expect(violations[0]?.file).toBe(drifted);
+      expect(violations[0]?.message).toContain("bun-version: 1.2.0");
+    } finally {
+      rmSync(root, { recursive: true, force: true });
+    }
+  });
 });
 
 describe("checkEnvSchemaDrift", () => {
diff --git a/apps/docs/astro.config.mjs b/apps/docs/astro.config.mjs
index 255e491b..c8f381d7 100644
--- a/apps/docs/astro.config.mjs
+++ b/apps/docs/astro.config.mjs
@@ -5,6 +5,7 @@ import sitemap from "@astrojs/sitemap";
 import starlight from "@astrojs/starlight";
 import tailwindcss from "@tailwindcss/vite";
 import mermaid from "astro-mermaid";
+import remarkGfm from "remark-gfm";
 import starlightLlmsTxt from "starlight-llms-txt";
 
 // Wrap every <table> so wide content stays keyboard-scrollable in Safari/Firefox.
@@ -107,6 +108,11 @@ export default defineConfig({
   },
 
   markdown: {
+    // GFM is normally Astro's default, but Starlight's MDX pipeline was not
+    // emitting <table>/<del> for pipe tables and strikethrough — every table
+    // in the docs rendered as literal `| … |` text. Wiring remark-gfm
+    // explicitly restores GFM table/strikethrough/autolink parsing.
+    remarkPlugins: [remarkGfm],
     rehypePlugins: [rehypeAccessibleTables],
   },
 
diff --git a/apps/docs/bun.lock b/apps/docs/bun.lock
index 5ff38605..95445e5e 100644
--- a/apps/docs/bun.lock
+++ b/apps/docs/bun.lock
@@ -16,6 +16,7 @@
         "react": "19.2.7",
         "react-dom": "19.2.7",
         "reading-time": "1.5.0",
+        "remark-gfm": "4.0.1",
         "sharp": "0.34.5",
         "tailwindcss": "4.3.0",
         "ws": "8.21.0",
diff --git a/apps/docs/package.json b/apps/docs/package.json
index 71acdc00..eb9fcab9 100644
--- a/apps/docs/package.json
+++ b/apps/docs/package.json
@@ -20,10 +20,11 @@
     "check:scripts-docs": "bun run scripts/generate-scripts-docs.mjs --check",
     "check:docs-data": "bun run check:lint-meta-docs && bun run check:scripts-docs",
     "check:fragments": "bun run scripts/check-fragments.mjs",
+    "check:rendered-markdown": "bun run scripts/check-rendered-markdown.mjs",
     "check:components": "bun run scripts/check-unused-components.mjs",
     "build:site": "bun run generate:og-image && astro build",
     "build": "bun run generate:og-image && astro build",
-    "build:ci": "bun run check:docs-data && bun run check:components && bun run generate:og-image && astro build && bun run check:fragments",
+    "build:ci": "bun run check:docs-data && bun run check:components && bun run generate:og-image && astro build && bun run check:fragments && bun run check:rendered-markdown",
     "preview": "bun run build:site && wrangler dev",
     "astro": "astro",
     "deploy": "bun run build:ci && wrangler deploy",
@@ -42,6 +43,7 @@
     "react": "19.2.7",
     "react-dom": "19.2.7",
     "reading-time": "1.5.0",
+    "remark-gfm": "4.0.1",
     "sharp": "0.34.5",
     "tailwindcss": "4.3.0",
     "ws": "8.21.0"
diff --git a/apps/docs/scripts/check-rendered-markdown.mjs b/apps/docs/scripts/check-rendered-markdown.mjs
new file mode 100644
index 00000000..2b20f3b5
--- /dev/null
+++ b/apps/docs/scripts/check-rendered-markdown.mjs
@@ -0,0 +1,73 @@
+#!/usr/bin/env node
+/*
+ * Guard against GFM markdown that ships to readers as literal source text.
+ *
+ * A misconfigured remark pipeline (e.g. GFM not wired into Starlight's MDX
+ * processor) silently renders pipe tables as `| cell | cell |` and the
+ * `|---|---|` delimiter row as plain text instead of <table>. The build
+ * still succeeds, so the breakage only surfaces in the browser. This check
+ * scans the built HTML for that residue and fails the build if it finds any.
+ *
+ * Detected residue (outside <pre>/<code>, where such syntax is shown as a
+ * deliberate example):
+ *   - GFM table delimiter rows: `|---|`, `| --- |`, `|:--|`, etc.
+ *
+ * Usage: node scripts/check-rendered-markdown.mjs   (after `astro build`)
+ */
+import { readdirSync, readFileSync, statSync } from "node:fs";
+import { dirname, join, relative, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const DIST = resolve(dirname(fileURLToPath(import.meta.url)), "..", "dist");
+
+function walkHtml(dir) {
+  const out = [];
+  for (const entry of readdirSync(dir)) {
+    const full = join(dir, entry);
+    if (statSync(full).isDirectory()) {
+      out.push(...walkHtml(full));
+    } else if (entry.endsWith(".html")) {
+      out.push(full);
+    }
+  }
+  return out;
+}
+
+/* Reduce a page to its visible prose so we only test real rendered text.
+ * Order matters: drop code blocks (where literal table syntax is a legitimate
+ * example) first, then strip every remaining tag — this also removes attribute
+ * payloads like Expressive Code's `data-code="…"` copy-button cache, which
+ * mirrors the code sample and would otherwise read as a false positive. */
+function toProse(html) {
+  return html
+    .replace(/<pre[\s\S]*?<\/pre>/gi, " ")
+    .replace(/<code[\s\S]*?<\/code>/gi, " ")
+    .replace(/<[^>]+>/g, " ");
+}
+
+/* A GFM table delimiter row: a pipe adjacent to a run of 2+ dashes. Real
+ * prose effectively never contains this; a rendered table never does either
+ * (the delimiter becomes <table> structure). */
+const DELIMITER = /\|\s*:?-{2,}|-{2,}:?\s*\|/;
+
+const offenders = [];
+for (const file of walkHtml(DIST)) {
+  const text = toProse(readFileSync(file, "utf8"));
+  if (DELIMITER.test(text)) {
+    offenders.push(relative(DIST, file));
+  }
+}
+
+if (offenders.length > 0) {
+  console.error(
+    "✗ Unrendered GFM table syntax found in built HTML (GFM pipeline broken?):",
+  );
+  for (const f of offenders) console.error(`  • ${f}`);
+  console.error(
+    "\nPipe tables are rendering as literal text. Ensure remark-gfm is wired\n" +
+      "into markdown.remarkPlugins in astro.config.mjs.",
+  );
+  process.exit(1);
+}
+
+console.log("✓ No unrendered markdown table syntax in built HTML");
diff --git a/apps/ui/playwright.config.ts b/apps/ui/playwright.config.ts
index b3d39539..a3fd2460 100644
--- a/apps/ui/playwright.config.ts
+++ b/apps/ui/playwright.config.ts
@@ -1,6 +1,8 @@
 import { defineConfig, devices } from "@playwright/test";
 
-const PORT = 7331;
+// Default dev/e2e port is 7331; override with PLAYWRIGHT_PORT when the UI
+// dev server is remapped (Docker port mapping, port conflicts on shared hosts).
+const PORT = Number(process.env.PLAYWRIGHT_PORT) || 7331;
 const BASE_URL = `http://localhost:${PORT}`;
 
 export default defineConfig({