fix(agents): remove invalid 'model: inherit' configuration

OpenCode requires models to be either explicitly defined with valid IDs or omitted to inherit the default model.

.opencode/agents/code-writer.md

@@ -5,7 +5,6 @@ description: |
   Works in TDD mode: receives test files, writes code to pass tests.
   Also manages project environment using Conda + uv.
 mode: subagent
-model: inherit
 permission:
   edit: allow
   bash:

.opencode/agents/paper-analyzer.md

@@ -5,7 +5,6 @@ description: |
   Produces paper_structure.md (what the paper contains) and replication_plan.md (what to implement).
   Requires image_understanding.md as input for complete analysis.
 mode: subagent
-model: inherit
 permission:
   edit: allow
   bash: deny

.opencode/agents/paper-director.md

@@ -10,7 +10,6 @@ description: |
   6. Dispatches test-runner for final verification
   Use when: User wants to replicate a paper, or runs /replicate command.
 mode: primary
-model: inherit
 ---
 
 # Paper Replication Director

.opencode/agents/paper-image-extractor.md

@@ -5,7 +5,6 @@ description: |
   Analyzes architecture diagrams, experiment plots, algorithm pseudocode, and equations.
   Output is used by paper-analyzer to create complete replication plan.
 mode: subagent
-model: inherit
 permission:
   edit: allow
   bash:

.opencode/agents/test-runner.md

@@ -4,7 +4,6 @@ description: |
   Subagent that runs tests, verifies code correctness, and generates replication reports.
   Compares results with paper's expected values and documents any differences.
 mode: subagent
-model: inherit
 permission:
   edit: allow
   bash: