#90: Soft apply remount without rebuild - #93

Closes #90

Summary

#90 — Settings Hard remount without rebuild

• Separate cold StartAsync (startup build) from RemountWithoutBuildAsync (Settings HardRestart)
• Settings Save is never a build trigger; StartOnLaunch applies to cold BM startup only
• Affected-project remount plans so unrelated Local projects are not bounced
• AI Controlled Hard remounts compile 0 times even when StartOnLaunch is true
• Docs updated for StartOnLaunch / HardRestart remount semantics

Hyperlink stability (pre-existing regression, narrow fix)

• Discovered during Enhancement: Settings Soft apply for Local process remount without rebuild #90 manual verification — present on main and #90: Soft apply remount without rebuild #93; Enhancement: Settings Soft apply for Local process remount without rebuild #90 did not cause it
• Root cause: AgeDisplay poll ticks were treated as urgent structural BUILDS row changes, bypassing mouse-over card deferral and recreating Hyperlink controls during clicks
• Fix: ignore AgeDisplay for urgent BuildSource row equality only; real identity/navigation changes remain urgent
• Navigation semantics unchanged: Status / Branch / Run # / Build No. / PR # still open PrimaryRun.RunUrl (build results)
• Follow-ups (not in this PR): #96 per-project browser, #97 semantic Azure deep links

Verification

Automated

• Focused Azure presentation/navigation/change-detector tests (25)
• Focused Enhancement: Settings Soft apply for Local process remount without rebuild #90 Settings/remount/classifier tests (112)
• Full ship-check (709)

Manual #90 remount-without-build — PASS

• Hard Settings remount paths do not trigger BuildAsync
• Cold start / StartOnLaunch semantics preserved
• AI Controlled isolation preserved

Manual Azure BUILDS hyperlinks — FULL PASS

• Status clickable while Age updates
• Run # clickable while Age updates
• PR # clickable while Age updates
• Build No. clickable while Age updates
• Repeated clicks reliable with mouse over panel

Test plan (reviewer)

• Confirm Settings Hard Save remounts without build on an active Local project
• Confirm BUILDS Azure links stay clickable during active Azure build with mouse over panel
• Confirm no new warnings in changed files