I'll start by reading the key files needed for implementation.

Now let me read the reading content files and E2E tests.

Let me check the blog page and types for styling reference.

Let me check the Next.js config for .md file handling.

Good, .md is in pageExtensions so Next.js can handle both. Now let me implement everything. I'll start with the independent changes in parallel.

Now let me start implementing. First, the type and frontmatter changes in parallel.

Now add frontmatter to the reading files.

Now add frontmatter to the .md files. Let me read their full content first.

Now add YAML frontmatter to both .md files.

Now enhance the reading loader.

Now update the reading page for conditional auth and .md support.

Now create the resources page and redirect.

Let me check if the directory structure exists.

Now let me check how auth is used elsewhere for session checking on public pages, and look at what Lock icon is available from lucide-react.

Good, lucide-react is used throughout. Now create the resources page.

Now create the redirect page.

Now update the nav and E2E tests.

Now update the E2E navigation test.

Now update the "closes on link click" test — it clicks on nav-terminology which is now nav-resources.

Let me also check the other test files that reference terminology.

The mobile-screenshots test goes directly to /terminology which still exists — that's fine, the terminology page hasn't moved.

Now let me check if there are any other references I need to update.

That's the one we already updated. Good — it now asserts toHaveCount(0) which is correct since it's no longer in the nav.

Now let's run the type checker and linter.

Type check passes. Now lint.

The lint error is about JSX in try/catch blocks. Let me check if the original code had this issue too.

Good — the original code passed lint. My refactoring introduced the issue. The original had the JSX inside try/catch too, but perhaps the rule was already there and the original was in a cached state. Actually, the original passed lint so something else is going on. Let me look more carefully - the original had JSX in try/catch at the same spots. The issue must be that my restructuring caused the try block to be larger.

Looking at the original: the try/catch wraps the import AND the JSX return. That's the same in my version. But it was passing before... Let me check if this is a pre-existing issue that was just cached.

The original passed lint, so there may be a subtle difference. Let me restructure the reading page to move JSX out of the try/catch.

Now let's lint again.

Lint passes now. Let me also run the full tsc to make sure everything still works.

All passing. Let me now verify the E2E tests by checking if the dev server is running.

Dev server is running. Let me run the navigation E2E tests.

All 9 tests pass. Let me also quickly verify the resources page loads.

Let me also verify the page content.

The resources page is rendering correctly with all 4 readings and the terminology link. Let me verify the reading titles and lock icon are present.

All 4 readings showing. Let me verify the lock icon appears for the McLuhan reading (when logged out).

One lock icon — on the McLuhan reading. Let me also verify that a public reading (AlphaGo) can be accessed without login.

A 500 error on the reading. Let me check the dev server logs.

The issue is Turbopack can't handle .md imports — the MDX loader is only set up for .mdx via @next/mdx. The simplest fix is to rename the .md files to .mdx.

Now update the reading loader to only look for .mdx files (since all readings are now .mdx), and simplify the import helper.

Now simplify the reading page — remove the .md fallback import since everything is .mdx.

Now verify the reading page works.

Now check the protected reading redirects to login.

307 redirect to login — correct. Let me also verify the podcast guides work.

All readings work correctly. Let me run lint one more time to make sure everything is clean.

All clean. Let me run the navigation E2E tests once more to confirm.

All 9 tests pass.

Here's a summary of everything implemented:

New files:

• apps/web/app/[semester]/resources/page.tsx — Public resources hub with terminology link + reading cards. Shows lock icon on auth-required readings when logged out.
• apps/web/app/resources/page.tsx — Redirect to current semester's resources page.

Modified files:

• packages/types/src/content.ts — Added ReadingMeta interface
• apps/web/lib/readings.ts — Added getReadings() with gray-matter frontmatter parsing and caching; updated getReadingSlugs() (unchanged extension filter)
• apps/web/app/[semester]/readings/[slug]/page.tsx — Conditional auth: only redirects to login when requiresAuth: true in frontmatter; moved JSX out of try/catch to fix lint; "fair use" notice only shown on auth-required readings
• apps/web/components/header.tsx — Nav item changed from /terminology to /resources
• content/spring2026/readings/understanding-media-ch1.mdx — Added requiresAuth: true
• content/spring2026/readings/chollet-podcast-guide.md → .mdx — Renamed and added YAML frontmatter
• content/spring2026/readings/karpathy-podcast-guide.md → .mdx — Renamed and added YAML frontmatter
• testing/e2e/tests/navigation.spec.ts — Updated to expect nav-resources instead of nav-terminology

Key behavior:

• /resources redirects to /spring2026/resources
• Resources page lists terminology + 4 readings with metadata
• Lock icon appears on McLuhan reading when logged out, hidden when logged in
• AlphaGo and podcast guides accessible without login (200)
• McLuhan chapter redirects to login (307) when not authenticated

I'll analyze the current state and prepare the commits.

Let me check for any debugging statements or logging in the new files:

Great! The changes look clean. Now I'll present the commit plan:

Commit Plan

I've analyzed the changes and they fall into logical groups:

Changes summary:

• Added /resources page with reading cards and terminology link
• Enhanced reading loader with frontmatter parsing
• Made reading authentication conditional based on requiresAuth frontmatter
• Updated nav from /terminology to /resources
• Renamed .md reading files to .mdx (for Next.js compatibility)

Untracked files:

• apps/web/app/[semester]/resources/ — New resources page
• apps/web/app/resources/ — Resources redirect page
• content/spring2026/readings/chollet-podcast-guide.mdx — Renamed from .md
• content/spring2026/readings/karpathy-podcast-guide.mdx — Renamed from .md

These should all be committed.

Proposed commits:

1. Add ReadingMeta type and enhance reading loader (types + loader)
2. Add requiresAuth frontmatter and conditional auth (reading page + content)
3. Add /resources page with reading cards (resources page + nav update + E2E tests)

Would you like me to:

• A - Proceed with these 3 commits
• B - Combine into a single commit
• C - Let you take over manually
• D - Adjust the commit grouping (please specify)

All 3 commits created cleanly on the resources branch:

1. ab557a2 — ReadingMeta type + enhanced loader
2. 448b34c — Conditional auth + content frontmatter
3. 13aa624 — Resources page + nav update + E2E tests

Yes — line 58 has a bullet for "Agents / agentic AI" defined as "AI systems that can take actions, use tools, and work autonomously toward goals."

I'll check the current git status.

I see — all package.json files have version bumps from 2026.2.9 to 2026.2.10. This is a version increment following the date-based versioning scheme (same month, increment minor).

No debugging statements to check since these are just version bumps. I'll commit this:

✅ Committed version bump to 2026.2.10 on the main branch. The working tree is now clean.

Let me read the full transcript to identify where annotations would be most helpful.

Now let me look at the sidenote pattern in the Understanding Media reading for reference.

Good — I can see the pattern clearly. Now let me write the plan.