[wab]

Closes #95

Renames enjeu to challenge (posts#110).

What

Four optional fields on Team member files, validated by pnpm validate:

• challenge: one of rp, se, sc, cx, sy, ai (CHALLENGE_KEYS, imported from scripts/schemas/challenge.schema.js).
• contribution: {fr, en}, each at most 100 characters.
• tools: 1 to 8 unique Tool slugs, ordered.
• previousCompanies: 1 to 3 names, each at most 30 characters, not translated.

If challenge is set, contribution and tools are required. Every tools value must be an existing Tool slug (cross-reference check in validateRepository). Existing team/ files are unchanged and still valid. The displayOrder comment and rule are untouched. The check that challenge names an existing challenge file belongs to #98.

Notes

• Length caps apply to the raw text (no trim); blank values are rejected.
• A non-array tools is reported as a schema error instead of crashing the cross-reference step. The same crash exists for Story tools; left alone to keep this PR to the Team member type.
• Authoring skills, CONTEXT.md and the Notion adapter are not updated here (Authoring skills handle Team member expert fields #103).

Tests

pnpm test: 368 passed. pnpm validate: all content valid.

[github-actions]

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