Module merge 

Deep merge logic for OpenCode configuration files.

Follows OpenCode’s documented precedence:

1. Remote config (.well-known/opencode) — organizational defaults
2. Global config (~/.config/opencode/opencode.json) — user preferences
3. Custom config (OPENCODE_CONFIG env var) — custom overrides
4. Project config (./opencode.json) — project-specific settings
5. .opencode directories — agents, commands, plugins
6. Inline config (OPENCODE_CONFIG_CONTENT env var) — runtime overrides
7. Managed config files — highest priority, not user-overridable

Merge rules (replicating DOCUMENTED behavior):

• For objects: deep merge (project keys override global, global keys preserved)
• For arrays: project replaces global
• For scalars: project overrides global
• Special handling for provider field: deep merge provider entries

Enums

MergeStrategy

Strategy for resolving merge conflicts.

Traits

Mergeable

Trait for types that support deep merge operations.

Functions

merge_configs

Merge multiple configs in priority order (lowest priority first).

merge_two

Merge two configs with the second taking priority.