docs: sync READMEs and docs with v0.6.8 (Linux GA, Windows preview, 41 actions)

[AprilNEA]

Summary

The README and docs/ lagged behind what master actually ships as of v0.6.8. This PR brings them current and adds a differentiation section.

README.md

• 41 built-in actions (was 39 — MouseBack/MouseForward landed in feat: add mouse button 4 and 5 options #96), both in the intro and the roadmap row.
• Windows reframed from "planned" to untested preview: signed .exe + per-user .msi (x86_64 + arm64) have shipped with every release since v0.6.7, and the WH_MOUSE_LL hook + agent port are merged — but nothing has been broadly validated on real hardware, so the install section and roadmap row say exactly that.
• Linux install: note that packages are published for both x86_64/amd64 and arm64/aarch64 (feat(linux): sign .deb/.rpm with minisign and add arm64 packages #228).
• New "Beyond Options+" section highlighting what OpenLogi does that Options+ won't: Linux support, the movable Gesture Button (thumb pad / middle / back / forward, per-direction bindings, or off), plain-TOML config, a real CLI, and the native (non-Electron) footprint.

Translated READMEs (zh-CN, ja, de, fr, ko)

Full rewrite mirroring the current English README. They were several eras stale — still claiming "macOS only, Linux/Windows coming soon", 6 UI languages, a 39-action catalog, and roadmap tables with no Unifying/Linux/Windows rows. Badges and the Telegram invite link are also synced to the English README's current set.

docs/CONFIGURATION.md

Rewritten for config schema v2: the unified bindings map (single action or per-direction gesture table keyed Up/Down/Left/Right/Click), gesture_owner, per_app_bindings, dpi_presets, lighting (enabled/color/brightness), and the current [app_settings] keys including language. The old page documented the legacy v1 button_bindings/gesture_bindings shape (now a deserialize-only migration shim) and claimed "there's no settings UI yet".

docs/DEVELOPMENT.md

• Linux system-library prerequisites (mirrors CI's apt set).
• cargo run -p xtask -- package-linux packaging section (nfpm).
• Project layout now lists the real workspace: openlogi-hidpp, openlogi-agent-core, openlogi-agent, and the 3-platform hook description.

docs/USAGE.md

• Document openlogi diag lighting <RRGGBB>.

Notes for review

• The claim that Options+ pins the gesture role to the thumb pad is asserted per the project owner; please sanity-check the wording against current Options+ behavior.
• v0.6.8's release run was still in progress when this was written; it will be the first release with Linux .deb/.rpm assets, which the Linux install section already describes.

[greptile-apps]

Greptile Summary

This PR syncs all README and docs files with the v0.6.8 release, updating platform status (Linux GA, Windows untested preview), action count (39→41), config schema (v1→v2), and adding full translated rewrites for de, fr, ja, ko, and zh-CN.

• README.md: Adds "Beyond Options+" differentiator section, Windows install instructions, Linux architecture note, and corrects the roadmap.
• docs/CONFIGURATION.md: Rewritten for schema v2 — unified bindings map, gesture_owner, per_app_bindings, lighting, and a matching TOML sample.
• docs/DEVELOPMENT.md: Adds Linux system-library prerequisites, updated workspace layout (new openlogi-hidpp, openlogi-agent-core, openlogi-agent crates), and a Linux packaging section.
• docs/USAGE.md: Documents the new openlogi diag lighting <RRGGBB> subcommand.

Confidence Score: 5/5

Documentation-only PR with no code changes; safe to merge.

All nine changed files are Markdown. Factual claims are consistent across English README, five translations, and docs pages. Two small omissions in CONFIGURATION.md (no gesture_owner example, no Linux WM_CLASS example) are the only gaps.

docs/CONFIGURATION.md — gesture_owner and per_app_bindings Linux key format lack examples.

Important Files Changed

Filename	Overview
README.md	Updated action count (39→41), reframed Windows as untested preview, added Linux architecture note, added "Beyond Options+" section, and added Windows install subsection.
docs/CONFIGURATION.md	Rewritten for schema v2: unified bindings map, lighting, gesture_owner, per_app_bindings. gesture_owner is described but not shown in the TOML example, and the per_app_bindings example lacks a Linux WM_CLASS illustration.
docs/DEVELOPMENT.md	Adds Linux system library prerequisites, updates workspace layout to include openlogi-hidpp, openlogi-agent-core, and openlogi-agent, and documents the package-linux xtask.
docs/USAGE.md	Adds openlogi diag lighting ff0000 with an inline clarifying comment; the literal hex value is explained by the comment text "any RRGGBB hex".
docs/README.de.md	Full rewrite mirroring current English README: 41 actions, Linux GA, Windows preview, new "Mehr als Options+" section, updated roadmap, corrected Telegram link.
docs/README.fr.md	Full rewrite mirroring current English README. Updated Telegram link, corrected action count, Linux/Windows status, and added "Au-delà d'Options+" section.
docs/README.ja.md	Full rewrite in Japanese mirroring the current English README. Updated action count, platform status, roadmap, install instructions, and Telegram link.
docs/README.ko.md	Full rewrite in Korean mirroring the current English README. Updated action count, platform status, roadmap, install instructions, and Telegram link.
docs/README.zh-CN.md	Full rewrite in Simplified Chinese. Badge set normalized, Telegram link updated, action count and roadmap corrected.

Entity Relationship Diagram

%%{init: {'theme': 'neutral'}}%%
erDiagram
    CONFIG {
        int schema_version
        string selected_device
    }
    APP_SETTINGS {
        bool launch_at_login
        bool check_for_updates
        bool show_in_menu_bar
        string language
    }
    DEVICE {
        string device_id
        int[] dpi_presets
        string gesture_owner
    }
    BINDINGS {
        string button_name
        string action_or_table
    }
    GESTURE_BUTTON_BINDINGS {
        string Click
        string Up
        string Down
        string Left
        string Right
    }
    PER_APP_BINDINGS {
        string app_id
        string button_name
        string action
    }
    LIGHTING {
        bool enabled
        string color
        int brightness
    }
    CONFIG ||--|| APP_SETTINGS : "app_settings"
    CONFIG ||--o{ DEVICE : "devices"
    DEVICE ||--o{ BINDINGS : "bindings"
    DEVICE ||--o| GESTURE_BUTTON_BINDINGS : "bindings.GestureButton"
    DEVICE ||--o{ PER_APP_BINDINGS : "per_app_bindings"
    DEVICE ||--o| LIGHTING : "lighting"

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