Add adaptive guided tours to the new UI

[niemyjski]

Context

Replacement for #2458, which was merged prematurely and reverted by #2505. Keep this PR in draft and do not merge until Blake explicitly approves it.

What changed

• adds adaptive guided tours to the Svelte UI using Driver.js 1.8.0
• scopes stable tour identifiers by resource: app-*, project-*, event-*, saved-view-*, and exie-*
• persists only numeric status and version per tour; legacy users default to an empty map
• adds a self-only progress endpoint with known-tour/version validation, stale-version protection, and completed precedence
• records privacy-safe feature-usage telemetry and exposes a global-admin monthly/all-time outcomes dashboard
• reports real prompt-to-start conversion, completion/dismissal rates, and the manual share of starts without manufacturing shown impressions for direct launches
• keeps catalog, command palette, help, responsive resume, identity changes, reduced motion, and focus restoration coordinated

Usage query design

• uses the Foundatio repository DSL with inferred fields and the exact known source set
• performs one terms/sum/max aggregation plus one bounded recent-events query in parallel
• supports a bounded UTC month or explicit all-time query without an N+1 count loop
• contains no raw Elasticsearch client hooks, prefix query, refresh-for-consistency call, or hard-coded keyword field

Safety and compatibility

• Svelte UI only; legacy Angular remains unchanged
• no AppHost, shared CSS, API-key, MIME-type, or unrelated project-loading behavior changes
• no automatic destructive project, saved-view, stack, tab, Exie prompt, or provider action
• existing public API behavior remains backwards compatible

Verification

• dotnet build src/Exceptionless.Web/Exceptionless.Web.csproj --no-restore: passed with 0 warnings and 0 errors
• focused reporting repository, admin API, and OpenAPI tests: 19 passed, 1 explicit performance-test skip
• OpenAPI snapshot regenerated and generated frontend contracts refreshed
• npm run check: 0 Svelte errors and 0 warnings
• targeted Prettier and ESLint checks: passed
• npm run build: passed
• populated month/all-time dashboard dogfood: desktop and mobile, no page-level overflow; mobile table rate columns remain horizontally reachable
• exact-head CI passed: API, client lint/check/build/tests, Playwright E2E, and Docker build

Breaking changes

None.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
Exceptionless.Insulation	37%	35%	286	❌
Exceptionless.Web	85%	70%	8264	✔
Exceptionless.Core	76%	68%	10516	✔
Exceptionless.AppHost	38%	41%	147	❌
Summary	79% (26423 / 33410)	68% (12382 / 18173)	19213	✔