chore: remove dead code, document water shader wave parameters

- Delete 4 legacy GLSL 330 shaders (basic.vert/frag, terrain.vert/frag)
  left over from OpenGL→Vulkan migration — Vulkan equivalents exist as
  *.glsl files compiled to SPIR-V by the build system
- Delete orphaned mpq_manager.hpp/cpp (694 lines) — not in CMakeLists,
  not included by any file, unreferenced StormLib integration attempt
- Add comments to water.frag.glsl wave constants explaining the
  multi-octave noise design: non-axis-aligned directions prevent tiling,
  frequency increases and amplitude decreases per octave for natural
  water appearance

include/pipeline/mpq_manager.hpp

@@ -1,129 +0,0 @@
-#pragma once
-
-#include <string>
-#include <vector>
-#include <cstdint>
-#include <memory>
-#include <map>
-#include <unordered_map>
-#include <unordered_set>
-#include <mutex>
-#include <shared_mutex>
-
-// Forward declare StormLib handle
-typedef void* HANDLE;
-
-namespace wowee {
-namespace pipeline {
-
-/**
- * MPQManager - Manages MPQ archive loading and file reading
- *
- * WoW 3.3.5a stores all game assets in MPQ archives.
- * This manager loads multiple archives and provides unified file access.
- */
-class MPQManager {
-public:
-    MPQManager();
-    ~MPQManager();
-
-    /**
-     * Initialize the MPQ system
-     * @param dataPath Path to WoW Data directory
-     * @return true if initialization succeeded
-     */
-    bool initialize(const std::string& dataPath);
-
-    /**
-     * Shutdown and close all archives
-     */
-    void shutdown();
-
-    /**
-     * Load a single MPQ archive
-     * @param path Full path to MPQ file
-     * @param priority Priority for file resolution (higher = checked first)
-     * @return true if archive loaded successfully
-     */
-    bool loadArchive(const std::string& path, int priority = 0);
-
-    /**
-     * Check if a file exists in any loaded archive
-     * @param filename Virtual file path (e.g., "World\\Maps\\Azeroth\\Azeroth.wdt")
-     * @return true if file exists
-     */
-    bool fileExists(const std::string& filename) const;
-
-    /**
-     * Read a file from MPQ archives
-     * @param filename Virtual file path
-     * @return File contents as byte vector (empty if not found)
-     */
-    std::vector<uint8_t> readFile(const std::string& filename) const;
-
-    /**
-     * Get file size without reading it
-     * @param filename Virtual file path
-     * @return File size in bytes (0 if not found)
-     */
-    uint32_t getFileSize(const std::string& filename) const;
-
-    /**
-     * Check if MPQ system is initialized
-     */
-    bool isInitialized() const { return initialized; }
-
-    /**
-     * Get list of loaded archives
-     */
-    const std::vector<std::string>& getLoadedArchives() const { return archiveNames; }
-
-private:
-    struct ArchiveEntry {
-        HANDLE handle;
-        std::string path;
-        int priority;
-    };
-
-    bool initialized = false;
-    std::string dataPath;
-    std::vector<ArchiveEntry> archives;
-    std::vector<std::string> archiveNames;
-
-    /**
-     * Find archive containing a file
-     * @param filename File to search for
-     * @return Archive handle or nullptr if not found
-     */
-    HANDLE findFileArchive(const std::string& filename) const;
-
-    /**
-     * Load patch archives (e.g., patch.MPQ, patch-2.MPQ, etc.)
-     */
-    bool loadPatchArchives();
-
-    /**
-     * Load locale-specific archives
-     * @param locale Locale string (e.g., "enUS")
-     */
-    bool loadLocaleArchives(const std::string& locale);
-
-    void logMissingFileOnce(const std::string& filename) const;
-
-    // Cache for mapping "virtual filename" -> archive handle (or INVALID_HANDLE_VALUE for not found).
-    // This avoids scanning every archive for repeated lookups, which can otherwise appear as a hang
-    // on screens that trigger many asset probes (character select, character preview, etc.).
-    //
-    // Important: caching misses can blow up memory if the game probes many unique non-existent filenames.
-    // Miss caching is disabled by default and must be explicitly enabled.
-    mutable std::shared_mutex fileArchiveCacheMutex_;
-    mutable std::unordered_map<std::string, HANDLE> fileArchiveCache_;
-    size_t fileArchiveCacheMaxEntries_ = 500000;
-    bool fileArchiveCacheMisses_ = false;
-
-    mutable std::mutex missingFileMutex_;
-    mutable std::unordered_set<std::string> missingFileWarnings_;
-};
-
-} // namespace pipeline
-} // namespace wowee