Expand model tag support: add GLM-5.1, simplify Anthropic IDs, scan tags anywhere in message

- Flink update_bars debouncing
- update_bars subscription idempotency bugfix
- Price decimal correction bugfix of previous commit
- Add GLM-5.1 model tag alongside renamed GLM-5
- Use short Anthropic model IDs (sonnet/haiku/opus) instead of full version strings
- Allow @tags anywhere in message content, not just at start
- Return hasOtherContent flag instead of trimmed rest string
- Only trigger greeting stream when tag has no other content
- Update workspace knowledge base references to platform/workspace and platform/shapes
- Hierarchical knowledge base catalog
- 151 Trading Strategies knowledge base articles
- Shapes knowledge base article
- MutateShapes tool instead of workspace patch

gateway/knowledge/platform/workspace.md

@@ -1,5 +1,5 @@
 ---
-description: "Workspace store schema, available stores, and WorkspaceRead/WorkspacePatch usage for reading and updating the user's UI state."
+description: "Workspace store schema: chartState (symbol/period/time range), indicators, shapes (chart drawings/annotations — see platform/shapes), and WorkspaceRead/WorkspacePatch usage."
 ---
 
 # Workspace
@@ -70,20 +70,7 @@ A flat map of `indicator_id → IndicatorInstance`. Each entry represents one st
 { "shapes": { "<shape_id>": Shape } }
 ```
 
-Each `Shape` has:
-
-| Field | Type | Description |
-|---|---|---|
-| `id` | string | Unique shape ID |
-| `type` | string | Drawing type (e.g. `"trend_line"`, `"horizontal_line"`, `"rectangle"`) |
-| `points` | array | Control points: `{ time: unix_ts, price: number, channel?: string }` |
-| `color` | string? | Hex color |
-| `line_width` | number? | Line thickness |
-| `line_style` | string? | `"solid"`, `"dotted"`, `"dashed"` |
-| `properties` | object? | Additional type-specific properties |
-| `symbol` | string? | Symbol the shape belongs to |
-| `created_at` | number? | Unix timestamp |
-| `modified_at` | number? | Unix timestamp |
+For the complete shapes reference — all supported types, point counts, override properties, and WorkspacePatch examples — see **`platform/shapes`** (`MemoryLookup({page: "platform/shapes"})`).
 
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