[docs]: Update Overview, Quick Start, Installation, etc

[LadyBluenotes]

In Router:

• Updated the Overview & Quick Start pages
• Added an Installation Guides section (moved some installation guides from "Guides" to this section)
• Created "Manual setup" from info in Quick Start

In Start:

• Updated Overview page
• Added a Guides section to shorten the "Getting Started" section

Summary by CodeRabbit

• Documentation

  • Major docs reorganization with a new Installation Guides section for React and Solid (manual setup, toolchain options).
  • Revamped Quick Start and Overview pages for Router and Start; added React FAQ content and a “Migrate from Next.js” guide.
  • Consolidated guide paths under /guide/, streamlined content, and removed outdated How-To and comparison pages.
  • Updated SSR docs to use the new default render handler name and clarified relative navigation behavior.

• Chores

  • Updated example projects to latest patch versions of devtools, router plugin, and React Start.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Reorganizes documentation navigation and content for Router and Start across React and Solid, consolidating installation guides, updating paths to /guide/, and pruning extensive “how-to” pages. Introduces minor API name updates in docs (SSR render handler, SPA mode). Updates many example package.jsons with TanStack dependency patch bumps.

Changes

Cohort / File(s)	Summary
Router docs navigation restructure docs/router/config.json	Consolidates installation into new top-level “Installation Guides”; removes scattered install/migration/how-to entries from Getting Started, Routing, and How-To.
Router React “How-To” removals docs/router/framework/react/how-to/*, .../drafts/*	Deletes numerous React how-to and draft guides (auth, testing, SSR setup, search params, UI integrations, env vars, RBAC, migration).
Router React installation docs docs/router/framework/react/installation/*, .../installation.md, .../installation/manual.md, .../installation/with-esbuild.md	Adds a new Manual installation guide; removes old umbrella installation page; normalizes ESbuild title casing.
Router React guides/content updates docs/router/framework/react/faq.md, .../guide/navigation.md, .../guide/ssr.md, .../overview.md, .../quick-start.md, .../comparison.md	Expands FAQ; adds relative navigation note; updates SSR docs to use defaultRenderHandler; rewrites overview and quick start; removes comparison page.
Router Solid minor updates docs/router/framework/solid/installation/manual.md, .../overview.md, .../quick-start.md	Adjusts titles/mappings for Solid manual setup and quick start; tweaks overview replace directives.
Start docs navigation overhaul docs/start/config.json	Adds React “Migrate from Next.js”; introduces Solid framework block; moves many routes under framework//guide/; removes Tutorials section; updates Tailwind entry path.
Start React guide updates docs/start/framework/react/guide/server-functions.md, .../guide/spa-mode.md, .../overview.md, .../quick-start.md	Fixes internal link; renames API usage from TanStackStart to tanstackStart; rewrites overview and quick start content/flow.
Start Solid guide mappings/stubs docs/start/framework/solid/guide/*, .../overview.md, .../environment-functions.md	Points Solid guides to React guide sources with replace mappings; updates replacement rules; standardizes references across multiple guide topics.
Examples dependency bumps examples/react/*/package.json, examples/react/*/*/package.json	Bumps @tanstack/react-router-devtools, @tanstack/router-plugin, and @tanstack/react-start to ^1.132.51 across many examples. No code changes.

Sequence Diagram(s)

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related issues

• Proposal: Add Comprehensive Testing Documentation to TanStack Router #4569 — This PR removes React testing how-to docs, intersecting with the issue’s goal to add comprehensive testing documentation.

Possibly related PRs

• Docs: Updating Vite plugin usage for Tanstack Start #5405 — Changes the same SPA docs, renaming TanStackStart to tanstackStart.
• Docs(Router-SSR): Resolve typos #5425 — Touches the same SSR docs, updating defaultRenderToString to defaultRenderHandler.
• docs(Start): Revise migration guide for TanStack Start #5211 — Involves the “Migrate from Next.js” docs path also modified in this reorg.

Suggested reviewers

• schiller-manuel
• brenelz

Poem

I hop through docs, reshaping trails,
Installation burrows, neatly in pails.
Guides now grouped, the map runs true,
SPA spells updated, SSR anew.
Examples nibble fresh versions, yum!
Tap-tap my paws—onward we drum.
Route on, friends—thump-thump! 🐇✨

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 51da7fb and 13a2f5c.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (107)

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