fix(agents): omit model: inherit so non-Claude tools don't see a bad model id

CLAUDE.md

@@ -26,7 +26,7 @@ An open-source tool combining LLM intelligence + static analysis to produce inte
 
 ## Agent Pipeline
 - Agents write intermediate results to `.understand-anything/intermediate/` on disk (not returned to context)
-- Agent models: all set to `inherit` for cross-platform compatibility (Claude Code, Cursor, opencode, etc.)
+- Agent model field is omitted from frontmatter so each platform falls back to its configured default — `inherit` was a Claude Code-only keyword that opencode (and similar tools) treated as a literal model id and rejected with `ProviderModelNotFoundError` (see #167)
 - `/understand` auto-triggers `/understand-dashboard` after completion
 - Intermediate files cleaned up after graph assembly
 

understand-anything-plugin/agents/architecture-analyzer.md

@@ -3,7 +3,6 @@ name: architecture-analyzer
 description: |
   Analyzes a codebase's file structure, summaries, and import relationships to identify
   logical architectural layers and assign every file to exactly one layer.
-model: inherit
 ---
 
 # Architecture Analyzer

understand-anything-plugin/agents/article-analyzer.md

@@ -2,7 +2,6 @@
 name: article-analyzer
 description: |
   Analyzes markdown files using pre-parsed structural data and LLM inference to extract knowledge graph nodes and edges (entities, claims, implicit relationships, topic clustering).
-model: inherit
 ---
 
 # Article Analyzer Agent

understand-anything-plugin/agents/assemble-reviewer.md

@@ -3,7 +3,6 @@ name: assemble-reviewer
 description: |
   Reviews the output of merge-batch-graphs.py for semantic issues the script
   cannot catch. Recovers dropped nodes/edges and fills cross-batch gaps.
-model: inherit
 ---
 
 # Assemble Reviewer

understand-anything-plugin/agents/domain-analyzer.md

@@ -2,7 +2,6 @@
 name: domain-analyzer
 description: |
   Analyzes codebases to extract business domain knowledge — domains, business flows, and process steps. Produces a domain-graph.json that maps how business logic flows through the code.
-model: inherit
 ---
 
 # Domain Analyzer Agent

understand-anything-plugin/agents/file-analyzer.md

@@ -4,7 +4,6 @@ description: |
   Analyzes batches of source files to produce knowledge graph nodes and edges.
   Extracts file structure, functions, classes, and relationships using a two-phase
   approach: structural extraction script followed by LLM semantic analysis.
-model: inherit
 ---
 
 # File Analyzer

understand-anything-plugin/agents/graph-reviewer.md

@@ -3,7 +3,6 @@ name: graph-reviewer
 description: |
   Validates knowledge graphs for correctness, completeness, and quality.
   Runs systematic checks and renders approval or rejection decisions.
-model: inherit
 ---
 
 # Graph Reviewer

understand-anything-plugin/agents/knowledge-graph-guide.md

@@ -5,7 +5,6 @@ description: |
   with an Understand-Anything knowledge graph. Guides users through graph
   structure, node/edge relationships, layer architecture, tours, and
   dashboard usage.
-model: inherit
 ---
 
 You are an expert on Understand-Anything knowledge graphs. You help users navigate, query, and understand the graph files produced by the `/understand` and `/understand-domain` skills.

understand-anything-plugin/agents/project-scanner.md

@@ -3,7 +3,6 @@ name: project-scanner
 description: |
   Scans a codebase directory to produce a structured inventory of all project files,
   detected languages, frameworks, import maps, and estimated complexity.
-model: inherit
 ---
 
 # Project Scanner

understand-anything-plugin/agents/tour-builder.md

@@ -3,7 +3,6 @@ name: tour-builder
 description: |
   Designs guided learning tours through codebases, creating 5-15 pedagogical steps
   that teach project architecture and key concepts in logical order.
-model: inherit
 ---
 
 # Tour Builder