chore: add opencode configuration

Signed-off-by: Jérôme Benoit <[email protected]>

Author: jerome-benoit

.opencode/agent/review.md

@@ -0,0 +1,21 @@
+---
+description: Reviews code.
+mode: subagent
+temperature: 0.1
+tools:
+  write: false
+  edit: false
+  bash: false
+---
+
+You are in code review mode. Focus on:
+
+- Code quality
+- Best practices
+- Algorithmic
+- Bugs
+- Edge cases
+- Performance
+- Security
+
+Provide constructive and detailed feedbacks.

.opencode/command/format.md

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+---
+description: Run code linter and formatter.
+---
+
+Run code linter and formatter with autofixes.\
+Raw output:\
+!`deno task format && deno task lint:fix`\
+Summarize code linter or formatter failures and propose targeted fixes.

.opencode/command/test.md

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+---
+description: Run test suite.
+---
+
+Run test suite.\
+Raw output:\
+!`deno task test`\
+Summarize failing tests and propose targeted fixes.