feat(plugins): catch code-mode drift between catalogs shipping the same model (#115183)

* feat(plugins): catch code-mode drift between catalogs sharing one model

Adds a contract test that groups bundled catalog rows by shared upstream
model and requires every row in a group to declare compat.codeMode once any
sibling does. Rows sharing a model id group automatically; rows under
different ids opt in with the new manifest-only `upstreamModel` marker.

Moves the kimi catalog into its manifest so the scan can see it, and records
the tier reseller catalogs were silently missing as explicit "capable".

* docs: regenerate docs map for the shared-model code-mode section

extensions/opencode/openclaw.plugin.json

@@ -52,7 +52,8 @@
             "compat": {
               "supportsUsageInStreaming": true,
               "supportsReasoningEffort": true,
-              "maxTokensField": "max_tokens"
+              "maxTokensField": "max_tokens",
+              "codeMode": "capable"
             }
           },
           {
@@ -77,7 +78,8 @@
             "compat": {
               "supportsUsageInStreaming": true,
               "supportsReasoningEffort": true,
-              "maxTokensField": "max_tokens"
+              "maxTokensField": "max_tokens",
+              "codeMode": "capable"
             },
             "status": "deprecated",
             "replacedBy": "claude-opus-5"
@@ -133,7 +135,8 @@
                 "xhigh",
                 "max"
               ],
-              "maxTokensField": "max_tokens"
+              "maxTokensField": "max_tokens",
+              "codeMode": "capable"
             }
           },
           {
@@ -179,7 +182,8 @@
             "compat": {
               "supportsUsageInStreaming": true,
               "supportsReasoningEffort": true,
-              "maxTokensField": "max_tokens"
+              "maxTokensField": "max_tokens",
+              "codeMode": "capable"
             },
             "status": "deprecated",
             "replacedBy": "gpt-5.6-sol"