diff --git a/.gitignore b/.gitignore
index cfcba86d..8d2925d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,12 @@
 .git/
 .obj/
 website/public/
+website/site/
 website/.hugo_build.lock
+.cache
+.cell
+cell
+libcell_runtime*
 bin/
 build/
 *.zip
diff --git a/test_backward.cm b/test_backward.cm
deleted file mode 100644
index 3d7f4915..00000000
--- a/test_backward.cm
+++ /dev/null
@@ -1,27 +0,0 @@
-// Test backward type propagation
-// Functions that use typed ops on parameters should have
-// parameter types inferred and type checks eliminated
-
-var sum_ints = function(a, b, c) {
-  return a + b + c
-}
-
-var count_down = function(n) {
-  var i = n
-  var total = 0
-  while (i > 0) {
-    total = total + i
-    i = i - 1
-  }
-  return total
-}
-
-var concat_all = function(a, b, c) {
-  return a + b + c
-}
-
-if (sum_ints(1, 2, 3) != 6) { log.error("FAIL sum_ints") }
-if (count_down(5) != 15) { log.error("FAIL count_down") }
-if (concat_all("a", "b", "c") != "abc") { log.error("FAIL concat_all") }
-
-log.test("backward type tests passed")
diff --git a/test_guards.ce b/test_guards.ce
deleted file mode 100644
index 23c1a1bc..00000000
--- a/test_guards.ce
+++ /dev/null
@@ -1,12 +0,0 @@
-// Test array guard emission and optimization
-var a = [1, 2, 3]
-push(a, 4)
-var v = a[]
-
-var f = function(arr) {
-  push(arr, 99)
-  var x = arr[]
-  return x
-}
-
-f(a)
diff --git a/test_intrinsics.cm b/test_intrinsics.cm
deleted file mode 100644
index 9cbcce5b..00000000
--- a/test_intrinsics.cm
+++ /dev/null
@@ -1,63 +0,0 @@
-// Test all inlined intrinsics
-var arr = [1, 2, 3]
-var rec = {a: 1}
-var fn = function() { return 1 }
-var txt = "hello"
-var num = 42
-var boo = true
-
-// is_array
-if (!is_array(arr)) { log.error("FAIL is_array(arr)") }
-if (is_array(rec)) { log.error("FAIL is_array(rec)") }
-if (is_array(42)) { log.error("FAIL is_array(42)") }
-
-// is_object
-if (!is_object(rec)) { log.error("FAIL is_object(rec)") }
-if (is_object(arr)) { log.error("FAIL is_object(arr)") }
-if (is_object(42)) { log.error("FAIL is_object(42)") }
-
-// is_function
-if (!is_function(fn)) { log.error("FAIL is_function(fn)") }
-if (is_function(rec)) { log.error("FAIL is_function(rec)") }
-
-// is_stone
-var frozen = stone([1, 2])
-if (!is_stone(frozen)) { log.error("FAIL is_stone(frozen)") }
-if (is_stone(arr)) { log.error("FAIL is_stone(arr)") }
-if (!is_stone(42)) { log.error("FAIL is_stone(42)") }
-if (!is_stone("hi")) { log.error("FAIL is_stone(str)") }
-
-// length
-if (length(arr) != 3) { log.error("FAIL length(arr)") }
-if (length(txt) != 5) { log.error("FAIL length(txt)") }
-if (length([]) != 0) { log.error("FAIL length([])") }
-
-// is_integer (already existed but now inlined)
-if (!is_integer(42)) { log.error("FAIL is_integer(42)") }
-if (is_integer(3.14)) { log.error("FAIL is_integer(3.14)") }
-
-// is_text
-if (!is_text("hi")) { log.error("FAIL is_text(hi)") }
-if (is_text(42)) { log.error("FAIL is_text(42)") }
-
-// is_number
-if (!is_number(42)) { log.error("FAIL is_number(42)") }
-if (!is_number(3.14)) { log.error("FAIL is_number(3.14)") }
-if (is_number("hi")) { log.error("FAIL is_number(hi)") }
-
-// is_logical
-if (!is_logical(true)) { log.error("FAIL is_logical(true)") }
-if (is_logical(42)) { log.error("FAIL is_logical(42)") }
-
-// is_null
-if (!is_null(null)) { log.error("FAIL is_null(null)") }
-if (is_null(42)) { log.error("FAIL is_null(42)") }
-
-// push (inlined)
-var a = [1]
-push(a, 2)
-push(a, 3)
-if (length(a) != 3) { log.error("FAIL push length") }
-if (a[2] != 3) { log.error("FAIL push value") }
-
-log.test("all intrinsic tests passed")
diff --git a/test_parse_boot.cm b/test_parse_boot.cm
deleted file mode 100644
index eb07a048..00000000
--- a/test_parse_boot.cm
+++ /dev/null
@@ -1,42 +0,0 @@
-var fd = use("fd")
-var json = use("json")
-var tokenize = use("tokenize")
-var parse = use("parse")
-var fold = use("fold")
-
-var src = text(fd.slurp("internal/bootstrap.cm"))
-var tok_result = tokenize(src, "bootstrap.cm")
-var ast = parse(tok_result.tokens, src, "bootstrap.cm", tokenize)
-var i = 0
-var folded = null
-var ast_json = null
-var f = null
-var bytecode = null
-var has_errors = ast.errors != null && length(ast.errors) > 0
-if (has_errors) {
-  log.error("PARSE ERRORS:")
-  while (i < length(ast.errors)) {
-    log.error(text(ast.errors[i].line) + ":" + text(ast.errors[i].column) + " " + ast.errors[i].message)
-    i = i + 1
-  }
-} else {
-  log.test("Parse OK")
-  log.test("  statements: " + text(length(ast.statements)))
-  if (ast.functions != null) {
-    log.test("  functions: " + text(length(ast.functions)))
-  } else {
-    log.test("  functions: null")
-  }
-  folded = fold(ast)
-  ast_json = json.encode(folded)
-  f = fd.open("/tmp/bootstrap_ast.json", "w")
-  fd.write(f, ast_json)
-  fd.close(f)
-  log.test("Wrote AST to /tmp/bootstrap_ast.json")
-  bytecode = mach_compile_ast("bootstrap", ast_json)
-  log.test("Bytecode size: " + text(length(bytecode)))
-  f = fd.open("/tmp/bootstrap_test.mach", "w")
-  fd.write(f, bytecode)
-  fd.close(f)
-  log.test("Wrote bytecode to /tmp/bootstrap_test.mach")
-}