Add emulator profiles and update docs

Add new emulator profiles (ares, BigPEmu, Eden, Model2, PrimeHack, Supermodel, Suyu, Xenia Canary, Yuzu) under emulators/*.yml with metadata, notes, file lists and exclusion/hle details. Update README counts (emulators/systems/files summary and auto-generated timestamp) and bump generated_at in database.json. Adjust mkdocs.yml navigation counts and add Yuzu entry to the Emulators nav.

emulators/suyu.yml

@@ -0,0 +1,57 @@
+emulator: Suyu
+type: standalone
+core_classification: community_fork
+source: "https://github.com/suyu-emu/suyu"
+upstream: "https://github.com/suyu-emu/suyu"
+profiled_date: "2026-03-26"
+core_version: "Yuzu EA 4176 based"
+display_name: "Suyu (Nintendo Switch)"
+systems: [nintendo-switch]
+analysis_date: "2026-03-26"
+analysis_commit: "c096d16 (Hengle/suyu-emu mirror, depth=1)"
+mode: standalone
+
+# Suyu is a community fork of yuzu, started after yuzu's legal takedown.
+# Key files loaded from <data_dir>/keys/ (fs_paths.h:20, path_util.cpp:124).
+# On Linux: $XDG_DATA_HOME/suyu/keys/
+# On Windows: %APPDATA%/suyu/keys/
+# Firmware NCAs are installed via UI, not placed as files.
+# HLE fallbacks exist for fonts, timezone, system version, mii model, ng word lists.
+# Original repos (GitHub + GitLab) are DMCA'd. Analysis from community mirror.
+
+files:
+  - name: "prod.keys"
+    required: true
+    path: "switch/"
+    mode: standalone
+    note: "Production keys for NCA decryption (master, key area, header, titlekek)"
+    source_ref: "src/core/crypto/key_manager.cpp:654"
+
+  - name: "title.keys"
+    required: false
+    path: "switch/"
+    mode: standalone
+    note: "Per-title encryption keys (rights_id to titlekey mappings)"
+    source_ref: "src/core/crypto/key_manager.cpp:657"
+
+  - name: "console.keys"
+    required: false
+    path: "switch/"
+    mode: standalone
+    note: "Console-specific keys (BIS, SD seed)"
+    source_ref: "src/core/crypto/key_manager.cpp:658"
+
+  - name: "key_retail.bin"
+    required: false
+    path: "switch/"
+    size: 160
+    mode: standalone
+    note: "Amiibo decryption keys (two InternalKey structs, 0x50 bytes each)"
+    source_ref: "src/core/hle/service/nfc/common/amiibo_crypto.cpp:273-294"
+
+notes: |
+  Suyu is a standalone Nintendo Switch emulator, community fork of yuzu after legal takedown.
+  dev.keys can be used instead of prod.keys when use_dev_keys is enabled (for Switch dev units).
+  Firmware (system NCAs) must be installed through Suyu's UI from a firmware ZIP or NCA folder.
+  Required for commercial games. Homebrew (.nro, .nso) can run without keys or firmware.
+  Original repos DMCA'd by Nintendo. Analysis performed from community mirror (Hengle/suyu-emu).