Function build_project_json_entry

src/mcp/mcp.c:1327–1365

Open a .db file briefly, collect node/edge counts and root_path, * then append a JSON entry to arr. */

/* Open a .db file briefly, collect node/edge counts and root_path,
 * then append a JSON entry to arr. */
static void build_project_json_entry(yyjson_mut_doc *doc, yyjson_mut_val *arr, const char *dir_path,
                                     const char *name, size_t name_len, int64_t size_bytes) {
    (void)name_len;

    char full_path[CBM_SZ_2K];
    snprintf(full_path, sizeof(full_path), "%s/%s", dir_path, name);

    /* #704: key on the db's INTERNAL project name, not its filename. Node/edge
     * rows are tagged with the internal name, so a drifted filename (copied or
     * renamed db, legacy '.'-vs-'-' username twin) would otherwise report 0
     * nodes/edges and be unresolvable. Skip ghost/empty/corrupt dbs entirely so
     * they don't appear as resolvable projects. */
    char project_name[CBM_SZ_1K];
    cbm_store_t *pstore = NULL;
    if (!db_internal_project_name(full_path, project_name, sizeof(project_name), &pstore)) {
        return; /* ghost / unreadable — not a resolvable project */
    }

    int nodes = cbm_store_count_nodes(pstore, project_name);
    int edges = cbm_store_count_edges(pstore, project_name);
    char root_path_buf[CBM_SZ_1K] = "";
    cbm_project_t proj = {0};
    if (cbm_store_get_project(pstore, project_name, &proj) == CBM_STORE_OK) {
        if (proj.root_path) {
            snprintf(root_path_buf, sizeof(root_path_buf), "%s", proj.root_path);
        }
        cbm_project_free_fields(&proj);
    }
    cbm_store_close(pstore);

    yyjson_mut_val *p = yyjson_mut_obj(doc);
    yyjson_mut_obj_add_strcpy(doc, p, "name", project_name);
    yyjson_mut_obj_add_strcpy(doc, p, "root_path", root_path_buf);
    add_git_context_json(doc, p, root_path_buf[0] ? root_path_buf : NULL);
    yyjson_mut_obj_add_int(doc, p, "nodes", nodes);
    yyjson_mut_obj_add_int(doc, p, "edges", edges);
    yyjson_mut_obj_add_int(doc, p, "size_bytes", size_bytes);
    yyjson_mut_arr_add_val(arr, p);
}

/* list_projects: scan cache directory for .db files.
 * Each project is a single .db file — no central registry needed. */