feat: add AdCP certification program

[bokelley]

Summary

• Complete three-tier certification program (Basics → Practitioner → Specialist) with 16 learning modules across 5 tracks
• Addie-led learning with scoring guides, exercises, and adaptive assessment
• Certifier.io integration for verifiable digital badges (group IDs pending setup)
• Site-wide integration: nav links, dashboard progress, member profile credentials, org team summary, member card badges

What's included

Backend (3 migrations, 5 new TypeScript files):

• certification_tracks, certification_modules, learner_progress, certification_credentials, user_credentials tables
• REST API: public tracks/credentials, authenticated progress/start/complete, org certification summary
• Certifier API client for badge issuance
• Auto-credential awarding when module requirements are met

Addie (7 new tools):

• check_certification_progress, start_certification_module, evaluate_exercise, score_assessment, complete_module, start_capstone_exam, complete_capstone_exam
• Certification-aware routing and system prompt updates

Content (11 Mintlify pages + 2 HTML pages):

• Foundation modules (A1-A3), specialization tracks (B, C, D), specialist capstones (E1-E4)
• Study guide with FAQ and preparation resources
• Certification portal with interactive track/credential display

Site integration (8 files modified):

• Certification + Study guide in "The Latest" nav dropdown
• "Get certified" suggested prompt in Addie web chat
• Dashboard section with progress ("X of Y completed") and credential badges
• Org dashboard team certification summary with per-member breakdown
• Credential tier badges (L1/L2/L3) on member cards
• Design system tokens for credential tier colors

Test plan

• All pre-existing tests pass (schema, example, migration, unit, integration)
• TypeScript compiles (no new errors)
• Playwright visual testing: nav, portal, study guide, chat, dashboard, members
• API endpoints verified: tracks (200), credentials (200), progress (200), my-credentials (200)
• Expert review feedback addressed (code, product, CSS, accessibility)
• Verify Certifier badge issuance after group IDs are configured
• Test full learning flow: start module → exercise → complete → auto-award credential

🤖 Generated with Claude Code

[bokelley]

Let's make sure that we red team this a bit. Let's see if we can trick Addy into giving us the certification, whether that's copy and paste in documentation or trying to get her to give us the simple answers or whatever else. Let's make sure that's not the case.

[bokelley]

I wonder if we should give Addy the operating instruction here that she should be almost like a private tutor. Her job is to assemble all the information someone needs, and even inside any module, maybe we just open it up for the users and say, "What do you know about ADCP?"

"Help me understand what you're starting with." You can just tell me anything you know or anything you're curious about. Just tell me how to start.

[bokelley]

Let's make sure there's a voice input. I know some people have Willow, but of course, other people may just want to have a little button they can press to record. I don't know if Tablas has this or if there are easy ways just to let people talk.

And I guess they could go into the full Addy chat experience, like the chat with Addy. Maybe there's a cheaper, faster version that's just the voice chat. But I still think latency is pretty high for that.

[bokelley]

Have we thought about how to make sure that it's easy for people to share their certifications? When they have those, it's like a link to my LinkedIn or give them promotional text to tell them how to tell their friends, "Hey, I just got that CB Basics certification. Here's how you get that." I'm just trying to make this as viral as possible.

There's also a PR open for GEO, like how to get people to refer to adcp and aao. Maybe thiscan be part of that.