Stop linking the retired pipelines, and document the view builder as it really is reached

[oblomov-dev]

What changes

Links to the retired repositories. builder-abap2UI5-js is being archived; builder-cap2UI5, builder-cap2UI5-web and web-cap2UI5-build are archived and may be deleted. Nothing consumes their output: cap2ui5 depends on @abap2ui5/node-runtime from npm, which abap2UI5 builds itself.

• guide/ecosystem.md, guide/where-it-comes-from.md: link cap2UI5's docs/adr/ and say what is true: archived or being archived, nothing consumes them.
• AGENTS.md: the ground-truth table was split by a paragraph (the rows below it rendered as text). It is one table again, the builder row is gone, and a note says not to link the archived repositories.
• HANDOVER.md, ROADMAP.md: history kept, dead links removed. ADR-006 and ADR-007 link their copies in cap2UI5/cap2UI5:docs/adr/, which exist on main today.
• README.md: the old playground ran the retired port and may go offline; it now points at the Quickstart.

"Not importable" (AGENTS.md): importing @abap2ui5/node-runtime/output/… works (the package exports ./output/*), but it is unsupported and couples to transpiler output.

abap2UI5/abap2UI5#2802 is merged (2026-09-27, 5a1bd70) but not in 1.145.0 or any release, so the approuter still needs the extra route. Corrected in HANDOVER.md, guide/roadmap.md and reference/deployment.md, which all said "open".

The view builder is not reachable through c.raw. z2ui5_if_client has no reference to it. guide/views.md now says so and documents the supported path with an example class: an ABAP app transpiled against the hosted runtime (transpiler pinned with --save-exact, deps/open-abap-core pre-cloned, only your class copied into srv/abap/, loaded from one app module). It also covers the unsupported JS route through abap.Classes and the c.event() NUL-placeholder issue. guide/roadmap.md links to it. The zcl_my_app entry in .verify-refs-ignore has a wider reason, because the page's ?app_start=ZCL_MY_APP names an ABAP class rather than a defineApp app.

Verified

• npm run check:ci is green against cap2UI5 main 003d293 and abap2UI5 main.
• Checked against the published @abap2ui5/node-runtime@1.145.0 and cap2ui5@0.1.0: the exports map, abap2ui5.transpiler = 2.13.91, the README's abap_transpile.json, no builder reference in z2ui5_if_client, Z2UI5_CL_UI5_APP_HI_WORLD built with the builder, and the \u0000 event token in define-app.js.
• Re-ran the ABAP recipe live in a fresh cds init --nodejs project (@sap/cds 9.9.3, Node 22):
  • --save-exact writes 2.13.91; without it, npm writes ^2.13.91.
  • The transpile reuses deps/open-abap-core and writes 747 files to output/. The app's file has no imports.
  • GET and POST on ?app_start=ZCL_MY_APP (and in lowercase) return 200. The edited value survives into a later roundtrip.
  • A misspelled builder method fails the transpile.
  • cds build --production carries srv/abap/ but not output/.
  • The startup hints do not list the app.
• 5a1bd70 is not an ancestor of tag 1.145.0.
• Not verified here: the c.event() NUL issue live through the builder. It is inferred from the placeholder in define-app.js.

The cap2UI5 PR that copies ADR-001 to ADR-004 and transpiler-roadmap.md is not merged yet. This PR names only paths that exist on cap2UI5 main, and HANDOVER.md says those records are "being copied".

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