docs: add full wiki pages for ssm - Home: overview, feature list, documentation table - _Sidebar: navigation sidebar - Installation: install script, source build, prerequisites - CLI-Reference: all flags and examples - Interactive-TUI: screens, keybindings, which-key menu - Configuration: config.toml keys, sessions.json, DOTS_SSM_DIR - Security: keychain storage, SSH_ASKPASS, biometric unlock - SSH-Config-Import: parsing ~/.ssh/config - Themes: all 7 themes with mnemonic keys - Updating: auto-check, self-upgrade, package manager fallback - Development: source layout, build/test, CI, release process

CtrlUserKnown committed Jul 22, 2026