Document the 0.6.0 features and cut the AI tells from README and the site

[JacobPoteet]

What changed

README.md

• New feature entries for work shipped in Folder sizes, subfolder navigation, and cross-folder triage #44 that the README never mentioned:
  • Browse in place: Enter/double-click into a folder, back / forward / up, clickable breadcrumb, Alt+arrows and Backspace, and the remembered per-folder selection.
  • Marks that span folders: the toolbar pill (37 marks in 5 folders) with its Discard button, and the commit dialog's per-folder breakdown and scope choice.
  • Folder sizes: what the Size column now shows, why each number costs a tree walk, and the three states that took the most work to get right (link for a junction, no access for a folder Windows refuses, ≥ 4.2 GB for a partial walk).
• Preview details now lists the folder item count; the build examples drop -Version since build.ps1 reads Directory.Build.props; Tech notes explain the FileSystemEnumerable choice and the session size cache.

docs/index.html

• Three matching feature cards (Browse in place, Marks that span folders, Folder sizes).
• The app mock catches up with the real UI: a location bar with back/forward/up and a clickable breadcrumb, a pending-marks pill, real sizes in the Size column (including a partial 870 MB…), and v0.6.0 on the update pill.
• Build snippet no longer pins a version.

Both files, pass for AI writing patterns

• Em dashes out of prose; label separators are colons now.
• Superlatives and filler adverbs cut: "the fastest way to", "without ever leaving", "actually", "simply".
• Rhetorical questions and staccato headings rewritten: "Swipe. Swipe. Done." → "Swipe through a folder", "Everything you need to triage a folder" → "What it does", "From cluttered to clean in four steps" → "How a pass goes", "Changed your mind? … no digging required" → a plain statement.

Why

Three of the four things a new user notices first (folder sizes, subfolder navigation, marks that survive a trip to another folder) shipped in #44 and appeared in neither the README nor the site, so both described the app as it was at 0.5.0.

Notes for a reviewer

• Three em dashes remain in docs/index.html. They sit inside the mock and reproduce strings the app really prints: Explorer Helper — <path> (MainWindow.xaml.cs) and Triage committed — … (MainViewModel.CommitTriage). Changing them would make the mock wrong.
• The mock's location bar and pill are new markup with their own CSS block next to .mock-toolbar; rendered and checked at desktop and narrow widths.
• No code changes, so CI here is only the build smoke test. pages.yml will deploy the site on merge, since docs/** changed.
• The Obsidian wiki was updated in the same pass (three new pages, 19 existing pages corrected for Correct docs that contradict the code (README, CLAUDE.md, landing page) #38/Fix the open issue backlog: rename, recycle, registry, versioning, CI #39/Folder sizes, subfolder navigation, and cross-folder triage #44/Make cutting a release a single step #46). It lives outside the repo, so none of it is in this PR.

🤖 Generated with Claude Code