docs(AppKit): document Files plugin policy API#71
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Update the Files skill reference for AppKit v0.21.0+ per-volume policy enforcement (PR databricks/appkit#197): - Add Permission Model section explaining the three layers (UC grants, execution identity, file policies) - Add Access Policies section with built-ins, combinators, custom policies, and policy-input types - Fix HTTP Routes intro: routes always run as service principal, user identity comes from x-forwarded-user and is passed to the policy (not asUser(req)) - Reframe Server-Side API: asUser(req) switches policy identity, not UC credentials - Refresh troubleshooting with policy-related errors and the default-publicRead() write-denial gotcha Co-authored-by: Isaac
Align with the jobs.md/lakebase.md style: keep gotchas and idioms in-skill, push encyclopedic reference to `npx @databricks/appkit docs`. - Flatten Access Policies subsections (5 H3s → 0) - Drop Policy inputs types block (duplicate of upstream `## Types`) - Drop standalone SP-bypass snippet (mention inline instead) - Inline Execution defaults table as a single sentence in Server-Side API - Drop full HTTP Routes table; keep the 403/security gotchas - Add `npx @databricks/appkit docs` pointers from each trimmed section (defer-to-docs count: 2 → 5, matching jobs.md) Net effect: 410 → 346 lines (-15%); the policy concepts and HTTP-route execution model stay, the redundant tables go. Co-authored-by: Isaac
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Summary
publicRead,allowAll,denyAll), combinators (all,any,not), customFilePolicyshape, exported types, andPolicyDeniedErrorx-forwarded-userand is passed to the policy (not viaasUser(req))asUser(req)is described as switching the policy identity, not the UC credentialspublicRead()default-write-denial gotchaTest plan
python3 scripts/skills.py validatepasses@databricks/appkitv0.31.0 typesThis pull request and its description were written by Isaac.