Update README.md for Quick Connect, RDP clipboard sync, latest release

README.md hadn't been touched since v2026.9.16.7 and had drifted:
Quick Connect (issue #23) was undocumented, RDP's own clipboard sync
was missing from its feature list (only VNC's was listed), and the
"latest release" pointed at a stale version with a note about a draft
that has long since published.

Also adds CLAUDE.md with a release checklist so README.md gets checked
for drift as a standard part of every release going forward, per user
request, instead of falling behind until someone notices.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,20 @@
+# OrbitHub
+
+## Release checklist
+
+Every release (new tag + build + publish) must include:
+
+- **Update `README.md`** to match current reality before tagging:
+  latest published release version/link, the Implemented Features list
+  (add/adjust bullets for anything shipped since the last release), and
+  any status notes (e.g. VNC/Apple-auth caveats) that changed.
+- Update `docs/PROGRESS.md` with a bullet describing what shipped.
+- Bump the version in `CMakeLists.txt`.
+- Build and test all reachable platforms (Linux local, Windows and macOS
+  over SSH — see prior release commits/sessions for the build scripts
+  used) before publishing.
+
+`docs/USER_GUIDE.md` (in-app `Help -> User Guide` and the release PDF)
+should also be checked for drift when a change affects user-facing
+behavior, though it doesn't need a pass on every single release the way
+README.md does.

README.md

@@ -15,9 +15,7 @@ OrbitHub is in active development.
 
 - Milestones completed: M0-M9
 - Current milestone: Milestone 10 (v1.0 Stabilization)
-- Latest published release: `v2026.9.16`; a `v2026.9.16.6` release is
-  drafted with several post-`.16` fixes and is pending a macOS installer
-  before publishing
+- Latest published release: `v2026.9.28`
 - VNC (M6) is fully built out: Raw/CopyRect/Hextile/ZRLE/Tight encodings,
   bidirectional clipboard sync, remote cursor shape sync, and both
   scale-to-fit and actual-size display modes. Standard VNC Authentication
@@ -31,7 +29,7 @@ Progress and milestone details:
 - [docs/PROGRESS.md](docs/PROGRESS.md)
 
 Latest published release (installers for Windows, Linux, and macOS):
-- [v2026.9.16](https://git.darksingularity.org/DarkSingularity/orbithub/releases/tag/v2026.9.16)
+- [v2026.9.28](https://git.darksingularity.org/DarkSingularity/orbithub/releases/tag/v2026.9.28)
 
 User Guide:
 - [docs/USER_GUIDE.md](docs/USER_GUIDE.md) (also available as a PDF attached to each release, and in-app via `Help -> User Guide`)
@@ -69,6 +67,10 @@ An embedded RDP session in a tab.
 - Drag-and-drop profile moves between folders with persistence
 - Import/Export of the whole profile list as JSON, and one-way import from
   mRemoteNG connection XML files (passwords are never imported)
+- Quick Connect: open a session without saving a profile first (`File`
+  menu or a button on the Profiles tab); a "Save as Profile..." action on
+  the resulting tab persists it afterward, pre-filled with what was
+  entered
 
 ### Session Experience
 
@@ -97,6 +99,7 @@ An embedded RDP session in a tab.
 - Resize handling and resolution renegotiation
 - Domain-aware authentication support
 - RDP security/performance profile options
+- Bidirectional clipboard sync
 
 ### VNC
 
@@ -122,6 +125,7 @@ An embedded RDP session in a tab.
 - `File` menu:
   - New Profile
   - New Folder
+  - Quick Connect...
   - Import Profiles...
   - Export Profiles...
   - Import from mRemoteNG...