Begin of the insertion## Context

On every Turbo navigation, four independent handlers react to the page changingEnd of the insertion Begin of the deletion \- MissionEnd of the deletion — Begin of the insertionbound to different Turbo events, in no guaranteed order, with no single module owning "what happens when we navigate":End of the insertion the Angular Begin of the insertionre-bootstrap (`turbo-angular-wrapper.ts`), per-navigation service re-registration (`app.module.ts` `initializeServices`),End of the insertion Begin of the deletion re-bootstrap-on-every-turbo:load (turbo-angular-wrapper.ts), crux of DREAM-514
\- Problem —End of the deletion the Begin of the insertionui-router sync (`openproject.routes.ts`), and legacy DOM setup (`turbo-global-listeners.ts`). Turbo's `turbo:load`/`turbo:render` events are gappy and overlapping — neither fires in every navigation scenario (full load, first visit, subsequent visit, 422 form error) — soEnd of the insertion Begin of the deletion hidden interface: destroy all root components + runBootstrap onEnd of the deletion each Begin of the insertionhandler independently guesses which events to bind and relies on idempotency to coverEnd of the insertion Begin of the deletion navigation, skip(1) guard, zero tests. Inlined candidate B's analysis sinceEnd of the deletion the Begin of the insertiongaps (see #65298). The "is this an Angular page?" decision is separately re-derived three times via `querySelector('openproject-base')`.

OP-19617 landed the jsdom test seam that makes this tractable; #OP-19618 (CSP nonce) and #OP-19666 (morph policy) split off the cross-cutting cleanups.

## Goal

Give the Angular↔Turbo navigation lifecycle one owner, so navigation behaviour is legible in one place, testable through a single interface, and cleanly editable as the ui-router is removed (#DREAM-45).

## Approach

Two scoped candidates first (A + B):

* AEnd of the insertion Begin of the deletion temp HTML report was purged (days elapsed)
\- Proposed deepening —End of the deletion named Begin of the insertion`navigation-lifecycle`End of the insertion Begin of the deletion bridgeEnd of the deletion module Begin of the insertionthat owns the TurboEnd of the insertion Begin of the deletion (bootstrap/onTurboNavigate/teardown), injectEnd of the deletion event Begin of the insertiontruth-table behind two semantic moments: `onBodyRendered` (fires on render or load, deduped once per navigation, all pages — legacy DOM setupEnd of the insertion Begin of the deletion sourceEnd of the deletion + Begin of the insertionservice re-registration) and `onAngularVisit` (fires on a completed Drive visit, Angular-hosted pages onlyEnd of the insertion Begin of the deletion appRef for testability; deletion test
\- Integration mapEnd of the deletion — Begin of the insertionroot teardown + re-bootstrap + router sync). Existing handlers become injected collaborators; onlyEnd of the insertion the Begin of the insertionmodule binds Turbo events.

* A single `isAngularHostedPage()` predicate owning the `openproject-base` sentinel, replacing the three ad-hoc queries.


Behaviour is preserved except two guarded improvements: first-visit body-setup dedupes 2×→1×,End of the insertion Begin of the deletion 6-area coupling surface with file:line (re-bootstrap, plugin-context/useAngularServices seam, opce-\* custom elements, 3 morph guards, Rails op\_turbo, existing nav spec)
\- Build-on, don't redo — PR #23980 test seam; turbo-angular-wrapper.ts deliberately left out for exactly this work
\- Gotchas — jsdom vs browser-mode vitest, precompiled-asset rebuild, chruby 4.0.2, zoneless, RxJS-vs-signals
\- Scope — B in; D/E (OP-19618)End of the deletion and Begin of the insertionper-navigation service re-registration routes through the module. The router-sync step is isolated as a named seam so #DREAM-45 can delete it in one place.

## Notes

Fixing the double-selected-menu bug (#DREAM-406) and retiring per-navigation re-bootstrap entirely are sequenced as follow-ups on top of this module, the latter gated on #DREAM-45. 

Supersedes the exploratory spike in https://github.com/opf/openproject/pull/20569.End of the insertion Begin of the deletion turbo#1300 out; DREAM-514 on-hold → confirm appetite, seam-firstEnd of the deletion