Rebuild the curriculum page around the wiki setup + challenge flow

[aschokking]

Short-term fix for the curriculum page: make it the setup-then-challenges flow the wiki actually teaches, instead of the LLM-written module list that was out of sequence with the challenges ported in #12.

The page is now

Setup          Onboarding -> Environment Setup -> Java Basics
Challenges     Basic Robot Principles -> Tank Drive -> ... -> Auto-stopping Collector
Reference      Robot Architecture, Mapping Buttons to Commands,
               Git Introduction, Clone with GitHub Desktop
AI Tools       (unchanged)

Sidebar matches. This is the wiki's own ordering, including Making a Pull Request landing mid-sequence rather than at the end.

Pages replaced with wiki versions

Wiki content wins on overlap. These were reviewed against current XbotEdu/SeriouslyCommonLib code before the migration, so they name classes and paths that actually exist:

Page	Why
getting-started/environment-setup.md	was VSCode-centric; the team standardized on IntelliJ. Now covers fork, clone, and the IntelliJ SDK/Gradle JVM config students actually need
getting-started/java-basics.md	wiki version, with the public class Foo() { syntax errors fixed
robot-fundamentals/robot-architecture.md	adds the Virtual Subsystems section (the setpoint-lock pattern) and Operator Command Map; the challenges link here, so students were landing on the LLM version
robot-fundamentals/operator-command-map.md	used the removed whenPressed/whileHeld API; now onTrue/whileTrue/toggleOnTrue as in current code

New pages: onboarding.md, git-introduction.md, clone-with-github-desktop.md.

DI and Factories

The wiki sequence puts Factories, The Power of Injection, and DI with Dagger between Command Groups and the SCL upgrade. Rather than duplicate them, those steps link to the existing core-programming/patterns/ pages.

Follow-up needed before this is really done: those pages don't fully cover what the wiki lessons teach. dependency-injection.md has no mention of SimulationComponent or MockDevicesModule — the real-vs-mock component swap that XbotEdu's own tests depend on — and providers-factories.md opens at Dagger level with no gentle on-ramp. It also repeats the same invalid public class ShooterSubsystem() { syntax. I'll send a separate PR strengthening both.

Unlisted, not deleted

Left on disk and reachable by URL, pending the bigger refactor: oop-concepts, intermediate-java, git-github, and robot-fundamentals/{electrical-contract,motor-control,pid-logic,command-based}.

Heads up on size

This is a net −554 lines. The wiki pages are leaner than the LLM ones (environment-setup 291→72, java-basics 433→236, operator-command-map 303→85). The LLM pages had more examples, quizzes and expandable asides; what they said was often wrong. Worth mining them for exercises during the refactor rather than treating this as the final shape.

Verification

pnpm docs:build passes, so no dead internal links. CI from #13 will confirm.

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