feat: Ollama models command, with load/pull/delete and unload (#16)

src/lib/constants.ts

@@ -3,10 +3,29 @@
 export const DEFAULT_HOST = "https://ollama.com";
 export const DEFAULT_MODEL = "gpt-oss:120b";
 
+/**
+ * Hosts that run the models themselves rather than handing them to a server.
+ *
+ * Only these can be managed: `pull` and `delete` are operations on a machine the
+ * user controls, and against Ollama Cloud there is nothing to pull or remove.
+ */
+export const CLOUD_HOSTNAMES = new Set(["ollama.com", "api.ollama.com"]);
+
 /** LocalStorage keys. The index is small; each session body gets its own key so saving one never rewrites the others. */
 export const STORAGE_INDEX_KEY = "lam.sessions.index";
 export const STORAGE_SESSION_PREFIX = "lam.session.";
 
+/**
+ * The model picked in the Models command.
+ *
+ * Separate from the `model` preference because an extension cannot write its own
+ * preferences: Vicinae reads them once at startup and holds them in memory, so
+ * writing the config file has no effect until it restarts (verified against
+ * 0.29.1). A selection in LocalStorage takes effect immediately instead, which is
+ * the whole point of picking a model from a list.
+ */
+export const STORAGE_MODEL_KEY = "lam.model.selected";
+
 /**
  * How many rounds of tool calls one turn may spend before the model is told to
  * answer with what it has.