Config hygiene: duplicate "cline-pass" provider blocks in opencode.jsonc #1308

Found during the provider-catalog sync (PR #1304, 2026-10-27)

.opencode/opencode.jsonc contains two separate "cline-pass" provider blocks (one with 19 model entries, one with 18). JSON/JSONC semantics: the later block silently wins; whichever block is shadowed is dead config, and any routes referencing models that only exist in the shadowed block would fail to resolve (or resolve differently than intended).

Ask

• Determine which block is effective under the fork's config loader (last-wins vs first-wins) and which models each block carries.
• Merge the two blocks into one, preserving every model entry and its variants/limits (union, not a pick).
• Verify all cline-pass/... route targets in experimental.model_routes still resolve after the merge.
• Note in the PR whether anything was previously shadowed — i.e., whether the effective catalog changes.