Function py_register_lambda

internal/cbm/lsp/py_lsp.c:674–699

/* ── lambda + dict-literal-dispatch registries ────────────────── */

static void py_register_lambda(PyLSPContext *ctx, const char *name, TSNode lambda_node) {
    if (!ctx || !name)
        return;
    if (ctx->lambda_count >= ctx->lambda_cap) {
        int new_cap = ctx->lambda_cap == 0 ? 8 : ctx->lambda_cap * 2;
        CBMLambdaEntry *grown =
            (CBMLambdaEntry *)cbm_arena_alloc(ctx->arena, (size_t)new_cap * sizeof(CBMLambdaEntry));
        if (!grown)
            return;
        if (ctx->lambdas && ctx->lambda_count > 0) {
            memcpy(grown, ctx->lambdas, (size_t)ctx->lambda_count * sizeof(CBMLambdaEntry));
        }
        ctx->lambdas = grown;
        ctx->lambda_cap = new_cap;
    }
    // Overwrite if name already registered.
    for (int i = 0; i < ctx->lambda_count; i++) {
        if (ctx->lambdas[i].name && strcmp(ctx->lambdas[i].name, name) == 0) {
            ctx->lambdas[i].lambda_node = lambda_node;
            return;
        }
    }
    ctx->lambdas[ctx->lambda_count].name = cbm_arena_strdup(ctx->arena, name);
    ctx->lambdas[ctx->lambda_count].lambda_node = lambda_node;
    ctx->lambda_count++;
}

static TSNode py_lookup_lambda(PyLSPContext *ctx, const char *name) {
    TSNode null_node = {0};