Move agent settings to opencode dir

The remove_env_flags function was incorrectly returning index 0 when no --env
flag was present, causing it to mistakenly skip the first argument
(program name) and shift all arguments incorrectly.

This required users to specify 'generate' twice to make the CLI work.

Fix by checking if --env was actually found (env_idx > 0) before removing
any arguments from the list.

.opencode/agents/AGENTS.md

@@ -0,0 +1,49 @@
+# Agent instructions
+## Git Commit Style
+- Make small, focused commits while working
+- Commit changes incrementally to make history easier to follow
+- Write clear, concise commit messages describing what changed
+- Ask permission before commiting or merging to main branch
+- When applicable, write tests before implementation
+
+# Developer Commands
+
+```bash
+# Unit tests (fast, no database required)
+cargo test --lib
+
+# Integration tests (requires test DB - run setup first)
+cargo run -- db setup --env test
+cargo test --tests
+
+# Single test file
+cargo test --test config_test
+
+# CLI commands
+cargo run -- db setup --env <dev|test|prod>
+cargo run -- db reset --env <dev|test|prod>
+cargo run -- import <csv-file> --env <dev|test|prod>
+cargo run -- generate <csv-file> <output-dir>
+```
+
+# Config Loading
+
+- Files: `config.toml` → `config.<env>.toml` → `config.example.toml` (fallback)
+- Gitignored: `config.toml`, `config.dev.toml`, `config.test.toml`, `config.prod.toml`
+- DB names: `rusty_petroleum_dev`, `rusty_petroleum_test`, `rusty_petroleum_prod`
+
+# Architecture
+
+- Binary: `src/main.rs`, Library: `src/lib.rs`
+- Test entry: `tests/common/test_db.rs` creates fresh DB per test via `cargo test --test`
+- Run lib tests first to verify logic without DB dependency
+
+# Issue Management
+
+- Use Gitea REST API to close issues:
+  ```bash
+  curl -X PATCH https://gitea.rowanbrook.net/api/v1/repos/jakob/rusty-petroleum/issues/{issue_number} \
+    -H "Content-Type: application/json" \
+    -H "Authorization: Bearer YOUR_TOKEN" \
+    -d '{"state": "closed"}'
+  ```

AGENTS.md

@@ -1,10 +0,0 @@
-# Issue Management
-- Use Gitea REST API to close issues when fixing them:
-  ```bash
-  curl -X PATCH https://gitea.rowanbrook.net/api/v1/repos/jakob/rusty-petroleum/issues/{issue_number} \
-    -H "Content-Type: application/json" \
-    -H "Authorization: Bearer YOUR_TOKEN" \
-    -d '{"state": "closed"}'
-  ```
-- Or suggest closing issues on Gitea web UI when automatic closing via API is not configured
-

src/main.rs

@@ -263,6 +263,9 @@ fn parse_env_flag(args: &[String]) -> (Env, usize) {
 /// command without affecting positional argument parsing.
 fn remove_env_flags(args: &[String]) -> Vec<String> {
     let (_, env_idx) = parse_env_flag(args);
+    if env_idx == 0 {
+        return args.to_vec();
+    }
     let mut result = Vec::with_capacity(args.len());
     
     for (i, arg) in args.iter().enumerate() {