Add data-modeling and appsource knowledge articles (MICROSOFT layer)

[JesperSchulz]

Summary

Adds 7 remedial BCQuality knowledge articles (MICROSOFT layer) on AL master-table / data-model design, each with good.al + bad.al samples — 21 files total. For review only.

Do not merge — opened for review at the requester's instruction.

Articles

data-modeling (new domain)

1. master-table-no-from-number-series-in-oninsert — master PK is No. Code[20] assigned from a number series in OnInsert, not an AutoIncrement/GUID/SystemId.
2. use-no-series-codeunit-not-noseriesmanagement — use codeunit 310 "No. Series" (GetNextNo/IsManual); the legacy NoSeriesManagement (cu 396) is obsolete-pending.
3. setup-table-is-a-singleton — one blank-keyed Primary Key Code[10] row; Card page with InsertAllowed/DeleteAllowed = false.
4. set-last-date-modified-in-onmodify-and-onrename — refresh Last Date Modified in both triggers (rename does not fire OnModify).
5. check-blocked-in-referencing-code-not-in-master — enforce Blocked via TestField in the consuming code, not in the master's own triggers.

style (existing domain)
6. applicationarea-required-on-page-controls — every page control needs ApplicationArea (AppSourceCop AS0062) or it is silently hidden in the Web client. (ToolTip is the separate CodeCop AA0218 rule.)

appsource (new domain)
7. object-affixes-prevent-collisions — reserved affix on own objects and on members added to base objects (AppSourceCop AS0011).

New domains & CODEOWNERS

Two NEW domains are introduced: data-modeling and appsource. Both are covered by the catch-all /microsoft/ @jesperschulz gate in CODEOWNERS, so review is not left unowned. However, unlike the established domains (events, performance, privacy, security, style, testing, upgrade), they do not yet have dedicated domain-expert reviewer lines — adding /microsoft/knowledge/data-modeling/ and /microsoft/knowledge/appsource/ lines may be wanted. (Article 6 lands in style/, which already has reviewers.)

Provenance (clean-room / no courseware)

Authored entirely from my own Business Central knowledge, with BC-specific facts verified against public sources only (learn.microsoft.com, microsoft/BCApps). No licensed courseware wording, structure, code, or example project was accessed or reproduced. Example objects use a neutral Loyalty / Membership theme.

Validation

Article count: 192 → 199 (+7, exactly as expected). knowledge-index.json is gitignored and is not committed.

$ python .github/scripts/validate_frontmatter.py --root .
Validator: 0 error(s), 0 warning(s)

$ pwsh .github/scripts/Test-KnowledgeIndex.ps1 -Root .
BCQuality index: 199 article(s). Index: ...\a.json
BCQuality index: 199 article(s). Index: ...\b.json
Knowledge-index check PASSED: 199 articles, deterministic, full coverage, selection inputs intact.

$ pwsh ./tools/Build-KnowledgeIndex.ps1
BCQuality index: 199 article(s). Index: ...\knowledge-index.json
199

Note on branch name

The requested branch name was jesperschulz-data-modeling-knowledge. The session branch-rename tool auto-prefixes the username and locks after the first rename, yielding jesperschulz-jesperschulz-data-modeling-knowledge; raw git branch -m is disallowed in this worktree. Rename on GitHub if the exact name is required.

[JesperSchulz]

I am not sure I'm a fan of the "data-modeling" domain. Need to think that properly through.