refactor: rename command files for namespace consistency

BREAKING CHANGE: All generic command names now prefixed with plugin namespace.
See CHANGELOG.md v7.0.0 for complete rename map.

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

plugins/data-platform/commands/data-lineage.md

@@ -0,0 +1,36 @@
+# /lineage - Data Lineage Visualization
+
+## Skills to Load
+- skills/lineage-analysis.md
+- skills/mcp-tools-reference.md
+- skills/visual-header.md
+
+## Visual Output
+
+Display header: `DATA-PLATFORM - Lineage`
+
+## Usage
+
+```
+/lineage <model_name> [--depth N]
+```
+
+## Workflow
+
+1. **Get lineage data**: Use `dbt_lineage` for dbt models
+2. **Build lineage graph**: Identify upstream sources and downstream consumers
+3. **Visualize**: ASCII tree with depth levels (see `skills/lineage-analysis.md`)
+4. **Report**: Full dependency chain and refresh implications
+
+## Examples
+
+```
+/lineage dim_customers
+/lineage fct_orders --depth 3
+```
+
+## Required MCP Tools
+
+- `dbt_lineage` - Get model dependencies
+- `dbt_ls` - List dbt resources
+- `dbt_docs_generate` - Generate full manifest