docs(baoyu-image-gen): add Agnes to SKILL.md, README, and config docs

skills/baoyu-image-gen/references/config/first-time-setup.md

@@ -59,6 +59,8 @@ options:
     description: "MiniMax image generation with subject-reference character workflows"
   - label: "Replicate"
     description: "Curated Replicate image families - nano-banana-2, Seedream, and Wan image models"
+  - label: "Agnes"
+    description: "Sapiens AI Agnes - optimized for high information density, complex layouts, reference-image support"
 ```
 
 ### Question 2: Default Google Model
@@ -187,6 +189,7 @@ default_model:
   zai: [selected Z.AI model or null]
   minimax: [selected minimax model or null]
   replicate: null
+  agnes: null
 ---
 ```
 
@@ -358,6 +361,7 @@ default_model:
   zai: [value or null]
   minimax: [value or null]
   replicate: [value or null]
+  agnes: [value or null]
 ```
 
 Only set the selected provider's model; leave others as their current value or null.

skills/baoyu-image-gen/references/config/preferences-schema.md

@@ -11,7 +11,7 @@ description: EXTEND.md YAML schema for baoyu-image-gen user preferences
 ---
 version: 1
 
-default_provider: null      # google|openai|azure|openrouter|dashscope|zai|minimax|replicate|jimeng|seedream|codex-cli|null (null = auto-detect; codex-cli is never auto-detected — pin it here or via --provider)
+default_provider: null      # google|openai|azure|openrouter|dashscope|zai|minimax|replicate|jimeng|seedream|codex-cli|agnes|null (null = auto-detect; codex-cli is never auto-detected — pin it here or via --provider)
 
 default_quality: null       # normal|2k|null (null = use default: 2k)
 
@@ -31,6 +31,7 @@ default_model:
   minimax: null             # e.g., "image-01"
   replicate: null           # e.g., "google/nano-banana-2"
   codex-cli: null           # Logical label only — Codex image_gen has no user-selectable model. Default: "codex-image-gen"
+  agnes: null               # e.g., "agnes-image-2.1-flash"
 
 batch:
   max_workers: 10
@@ -62,6 +63,9 @@ batch:
     codex-cli:
       concurrency: 1
       start_interval_ms: 2000
+    agnes:
+      concurrency: 3
+      start_interval_ms: 1100
 ---
 ```
 
@@ -84,6 +88,7 @@ batch:
 | `default_model.minimax` | string\|null | null | MiniMax default model |
 | `default_model.replicate` | string\|null | null | Replicate default model |
 | `default_model.codex-cli` | string\|null | null | Codex-CLI logical label (Codex image_gen has no user-selectable model) |
+| `default_model.agnes` | string\|null | null | Agnes default model |
 | `batch.max_workers` | int\|null | 10 | Batch worker cap |
 | `batch.provider_limits.<provider>.concurrency` | int\|null | provider default | Max simultaneous requests per provider |
 | `batch.provider_limits.<provider>.start_interval_ms` | int\|null | provider default | Minimum gap between request starts per provider |
@@ -118,6 +123,7 @@ default_model:
   zai: "glm-image"
   minimax: "image-01"
   replicate: "google/nano-banana-2"
+  agnes: "agnes-image-2.1-flash"
 batch:
   max_workers: 10
   provider_limits:
@@ -136,5 +142,8 @@ batch:
     minimax:
       concurrency: 3
       start_interval_ms: 1100
+    agnes:
+      concurrency: 3
+      start_interval_ms: 1100
 ---
 ```