feat(unity): enhance visual effects and animations

- Add cloud system with procedural sprites and parallax movement
- Add tree swaying animation for palm trees
- Improve agent breathing with squash & stretch animation
- Add jump animation routine for agent reactions
- Add custom CartoonWater shader support
- Add SetupVisuals editor tool and GlobalProfile asset
- Lower speech bubble alpha for glass effect

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

unity-client/Assets/Editor/SetupVisuals.cs

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+using UnityEngine;
+using UnityEditor;
+using UnityEngine.Rendering.PostProcessing;
+
+public class SetupVisuals
+{
+    [MenuItem("TheIsland/Setup PostProcessing")]
+    public static void Setup()
+    {
+        // 1. Setup Camera
+        var camera = Camera.main;
+        if (camera == null) { Debug.LogError("No Main Camera!"); return; }
+        
+        var layer = camera.gameObject.GetComponent<PostProcessLayer>();
+        if (layer == null) layer = camera.gameObject.AddComponent<PostProcessLayer>();
+        
+        // Use Default layer
+        layer.volumeLayer = LayerMask.GetMask("Default"); 
+        // Simple AA
+        layer.antialiasingMode = PostProcessLayer.Antialiasing.SubpixelMorphologicalAntialiasing;
+
+        // 2. Create Global Volume
+        var volumeGo = GameObject.Find("GlobalVolume");
+        if (volumeGo == null)
+        {
+            volumeGo = new GameObject("GlobalVolume");
+            volumeGo.layer = LayerMask.NameToLayer("Default");
+        }
+        
+        var volume = volumeGo.GetComponent<PostProcessVolume>();
+        if (volume == null) volume = volumeGo.AddComponent<PostProcessVolume>();
+        
+        volume.isGlobal = true;
+        
+        // 3. Create Profile if not exists
+        var profilePath = "Assets/GlobalProfile.asset";
+        var profile = AssetDatabase.LoadAssetAtPath<PostProcessProfile>(profilePath);
+        if (profile == null)
+        {
+            profile = ScriptableObject.CreateInstance<PostProcessProfile>();
+            AssetDatabase.CreateAsset(profile, profilePath);
+        }
+        volume.profile = profile;
+
+        // 4. Clean existing settings
+        profile.settings.Clear();
+
+        // 5. Add Effects
+        // Bloom - Glow effect
+        var bloom = profile.AddSettings<Bloom>();
+        bloom.enabled.value = true;
+        bloom.intensity.value = 3.0f;
+        bloom.threshold.value = 1.0f;
+        bloom.softKnee.value = 0.5f;
+
+        // Color Grading - Better colors
+        var colorGrading = profile.AddSettings<ColorGrading>();
+        colorGrading.enabled.value = true;
+        colorGrading.tonemapper.value = Tonemapper.ACES;
+        colorGrading.postExposure.value = 0.5f; // Slightly brighter
+        colorGrading.saturation.value = 20f; // More vibrant
+        colorGrading.contrast.value = 15f; // More pop
+
+        // Vignette - Focus center
+        var vignette = profile.AddSettings<Vignette>();
+        vignette.enabled.value = true;
+        vignette.intensity.value = 0.35f;
+        vignette.smoothness.value = 0.4f;
+
+        EditorUtility.SetDirty(profile);
+        AssetDatabase.SaveAssets();
+        Debug.Log("Visuals Setup Complete! Bloom, ColorGrading, and Vignette configured.");
+    }
+}

unity-client/Assets/Editor/SetupVisuals.cs.meta

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+fileFormatVersion: 2
+guid: 2f42deb3551fc40dfbe902fe1945f25b