docs: Add comprehensive documentation and update planning

- Add docs/README.md with project overview and current status
- Add docs/architecture.md with detailed architecture documentation
- Add docs/development.md with development guide for contributors
- Update .notes/todo.md to reflect architecture fix completion
- Update .notes/plan.md with completed phases and next priorities

Architecture fixes (daemon and dbus), bubblewrap integration are now complete.
Ready for OCI integration phase.

.notes/rpm-ostree/overview.md

@@ -69,6 +69,67 @@ rpm-ostree/
 ├── Cargo.toml                    # Main Rust workspace configuration
 ├── configure.ac                  # Autotools configuration
 └── Makefile.am                   # Build system configuration
+```
+Files inside rpm-ostree-2025.8-2.fc42.rpm
+```
+    etc/
+        rpm-ostreed.conf
+    usr/
+        bin/
+            rpm-ostree  # client / cli executable
+        lib/
+            .build-id/
+                c0/
+                    4a8f1297c0e4ffc011fd4b487f98388309d8d0
+            kernel/
+                install.d/
+                    05-rpmostree.install
+            systemd/
+                system/
+                    rpm-ostree-bootstatus.service
+                    rpm-ostree-countme.service
+                    rpm-ostree-countme.timer
+                    rpm-ostree-fix-shadow-mode.service
+                    rpm-ostreed-automatic.service
+                    rpm-ostreed-automatic.timer
+                    rpm-ostreed.service
+        lib64/
+            rpm-ostree/
+                rpm-ostree-0-integration-opt-usrlocal-compat.conf
+                rpm-ostree-0-integration-opt-usrlocal.conf
+                rpm-ostree-0-integration.conf
+        libexec/
+            rpm-ostreed # Daemon executable
+        share/
+            bash-completion/
+                completions/
+                    rpm-ostree
+            dbus-1/
+                system-services/
+                    org.projectatomic.rpmostree1.service
+                system.d/
+                    org.projectatomic.rpmostree1.conf
+            doc/
+                rpm-ostree/
+                    COPYING.GPL
+                    COPYING.LGPL
+                    LICENSE
+                    README.md
+            man/
+                man1/
+                    rpm-ostree.1.gz
+                man5/
+                    rpm-ostreed.conf.5.gz
+                man8/
+                    rpm-ostree-countme.service.8.gz
+                    rpm-ostree-countme.timer.8.gz
+                    rpm-ostreed-automatic.service.8.gz
+                    rpm-ostreed-automatic.timer.8.gz
+            polkit-1/
+                actions/
+                    org.projectatomic.rpmostree1.policy
+
+
 ```
 
 ## Key Components Analysis