chore(cpex): Update AY25/26 Sem 2 CPEx (for AY26/27 Sem 1)

[jloh02]

Routine updates

[vercel]

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Project	Deployment	Actions	Updated (UTC)
nusmods-website	Ready	Preview, Comment	Mar 8, 2026 2:03pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
nusmods-export	Ignored	Preview	Mar 8, 2026 2:03pm

[greptile-apps]

Confidence Score: 5/5

• This PR is safe to merge — all three changes are consistent, mechanical, and follow the same pattern as the previous CPEx update.
• All changes are narrow, well-scoped, and internally consistent. The schedule dates are correctly formatted with SGT offsets, the academic year string format matches the existing convention, and the feature flags align with the upcoming CPEx start date. No logic changes or new code paths are introduced.
• No files require special attention.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["CPEx Scraper\n(ACADEMIC_YEAR = '2026/27')"] -->|"Fetches modules for AY26/27"| B["NUS Course API"]
    B -->|"Module list with MPE attributes"| C["cpexModules.json"]
    C -->|"Loaded by website"| D["CPEx Feature\nenableCPExforProd = true\nshowCPExTab = true"]
    D --> E["CPEx Tab visible to users"]
    F["modreg-schedule.json\nCPEx: Mar 9–13, 2026"] -->|"Schedule window"| E
    E -->|"Mar 9, 2026 00:00 SGT"| G["CPEx Opens"]
    G -->|"Mar 13, 2026 23:59 SGT"| H["CPEx Closes"]
    H -->|"Post-CPEx cleanup\n(future PR)"| I["Feature flags reset to false"]

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_{Last reviewed commit: 2760cea}

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.52%. Comparing base (988c6fd) to head (0ee6f2d).
⚠️ Report is 204 commits behind head on master.

Files with missing lines	Patch %	Lines
website/src/views/mpe/constants.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4331      +/-   ##
==========================================
+ Coverage   54.52%   56.52%   +1.99%     
==========================================
  Files         274      308      +34     
  Lines        6076     6962     +886     
  Branches     1455     1682     +227     
==========================================
+ Hits         3313     3935     +622     
- Misses       2763     3027     +264     

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[ravern]

LGTM

We will only merge this once CPEx is supposed to start.