projects : am projects (agregats par depot depuis le journal) + profils de projet dans la config (issue #29) - agent dominant, sessions, durees, cache projects.json rafraichi par doctor --fix

src/help.rs

@@ -217,6 +217,23 @@ pub static HELP_SPECS: &[HelpSpec] = &[
             HelpExample { desc: "One agent over the last month.", code: "stats claude-code --period 30d" },
         ],
     },
+    HelpSpec {
+        name: "projects",
+        category: "Commands",
+        usage: "projects {flags} [name]",
+        about: "Show which agent works on which project (derived from the journal).",
+        search_terms: &["workspace", "repository", "activity"],
+        flags: &[],
+        subcommands: &[],
+        parameters: &[
+            HelpParam { name: "name", typ: "string", desc: "Project name (omit to list every project)" },
+        ],
+        io: None,
+        examples: &[
+            HelpExample { desc: "Every project with activity.", code: "projects" },
+            HelpExample { desc: "One project in detail.", code: "projects api" },
+        ],
+    },
     HelpSpec {
         name: "log",
         category: "Commands",