diff --git a/scripts/build/config.ts b/scripts/build/config.ts
index 62a91376f6e7..3b6e53bf1a11 100644
--- a/scripts/build/config.ts
+++ b/scripts/build/config.ts
@@ -84,8 +84,6 @@ export interface Config {
   freebsd: boolean;
   /** linux || darwin || freebsd */
   unix: boolean;
-  /** darwin || freebsd — kqueue-based event loop */
-  kqueue: boolean;
   x64: boolean;
   arm64: boolean;
 
@@ -732,7 +730,6 @@ export function resolveConfig(partial: PartialConfig, toolchain: Toolchain): Con
   const windows = os === "windows";
   const freebsd = os === "freebsd";
   const unix = linux || darwin || freebsd;
-  const kqueue = darwin || freebsd;
   const x64 = arch === "x64";
   const arm64 = arch === "aarch64";
   // Darwin target on a non-darwin host (Linux CI box building macOS
@@ -1175,7 +1172,6 @@ export function resolveConfig(partial: PartialConfig, toolchain: Toolchain): Con
     windows,
     freebsd,
     unix,
-    kqueue,
     x64,
     arm64,
     host,
diff --git a/scripts/build/depVersionsHeader.ts b/scripts/build/depVersionsHeader.ts
index 810601198df9..85cb9a17b241 100644
--- a/scripts/build/depVersionsHeader.ts
+++ b/scripts/build/depVersionsHeader.ts
@@ -103,9 +103,6 @@ export function generateDepVersionsHeader(cfg: Config): string {
     'extern "C" {',
     "#endif",
     "",
-    "// Dependency versions",
-    ...versions.map(([name, val]) => `#define BUN_DEP_${name} "${val}"`),
-    "",
     "// C string constants for easy access",
     ...versions.map(([name, val]) => `static const char* const BUN_VERSION_${name} = "${val}";`),
     "",
diff --git a/scripts/build/source.ts b/scripts/build/source.ts
index 9e6a932da208..08f3e88c07ef 100644
--- a/scripts/build/source.ts
+++ b/scripts/build/source.ts
@@ -452,7 +452,7 @@ export interface Dependency {
 
   /**
    * Macro name suffix for `bun_dependency_versions.h` — becomes
-   * `BUN_DEP_<macro>` / `BUN_VERSION_<macro>`. The value is derived from
+   * `BUN_VERSION_<macro>`. The value is derived from
    * `source(cfg)`: `github-archive.commit`, `prebuilt.identity`, etc.
    *
    * Omit for deps that shouldn't appear in `process.versions` (e.g.
diff --git a/scripts/glob-sources.ts b/scripts/glob-sources.ts
index 9848a8c000f8..aac8548984a7 100644
--- a/scripts/glob-sources.ts
+++ b/scripts/glob-sources.ts
@@ -116,7 +116,6 @@ const patterns = {
       "packages/bun-usockets/src/crypto/*.c",
       "src/jsc/bindings/uv-posix-polyfills.c",
       "src/jsc/bindings/uv-posix-stubs.c",
-      "src/*.c",
       "src/jsc/bindings/node/http/llhttp/*.c",
     ],
   },
diff --git a/src/api/lib.rs b/src/api/lib.rs
index 14249de1ba5f..afdb17d4cc67 100644
--- a/src/api/lib.rs
+++ b/src/api/lib.rs
@@ -8,9 +8,7 @@
 // Re-exports — canonical definitions live in `bun_options_types::schema::api`.
 // ──────────────────────────────────────────────────────────────────────────
 
-pub use bun_options_types::schema::api::{
-    BunInstall, Ca, NodeLinker, NpmRegistry, NpmRegistryMap, PnpmMatcher,
-};
+pub use bun_options_types::schema::api::{BunInstall, Ca, NpmRegistry};
 
 // ──────────────────────────────────────────────────────────────────────────
 // npm_registry  — module path for the nested `NpmRegistry::Parser`
diff --git a/src/bundler_jsc/PluginRunner.rs b/src/bundler_jsc/PluginRunner.rs
index ed2d4883095a..cc7d627734ca 100644
--- a/src/bundler_jsc/PluginRunner.rs
+++ b/src/bundler_jsc/PluginRunner.rs
@@ -1,8 +1,6 @@
 //! Runtime plugin host (JS-side `Bun.plugin()` resolve hooks). Lives here so
 //! `bundler/` is free of `JSValue`/`JSGlobalObject`.
 
-pub use bun_resolver::fs::Path as FsPath;
-
 /// Re-export of the concrete struct.
 /// `extract_namespace` / `could_be_plugin` (pure byte parsing) live in
 /// `bun_bundler`; the stateful struct + `on_resolve` body live in
diff --git a/src/bundler_jsc/lib.rs b/src/bundler_jsc/lib.rs
index ad322194fe4b..582e07aa76ef 100644
--- a/src/bundler_jsc/lib.rs
+++ b/src/bundler_jsc/lib.rs
@@ -5,7 +5,7 @@
 // ──────────────────────────────────────────────────────────────────────────
 // Bridge types — re-exported from `bun_jsc` now that it `cargo check`s.
 // ──────────────────────────────────────────────────────────────────────────
-pub use bun_jsc::{ErrorableString, JSGlobalObject, JSValue, JsError, JsResult, VM};
+pub use bun_jsc::{JSGlobalObject, JSValue, JsResult, VM};
 
 #[path = "source_map_mode_jsc.rs"]
 pub mod source_map_mode_jsc;
diff --git a/src/clap/error.rs b/src/clap/error.rs
index 42569187ccae..3bab9a99ffad 100644
--- a/src/clap/error.rs
+++ b/src/clap/error.rs
@@ -6,8 +6,6 @@ pub enum Error {
     MissingValue,
     #[error("InvalidArgument")]
     InvalidArgument,
-    #[error("WriteFailed")]
-    WriteFailed,
 }
 
 impl Error {
@@ -17,7 +15,6 @@ impl Error {
             Self::DoesntTakeValue => "DoesntTakeValue",
             Self::MissingValue => "MissingValue",
             Self::InvalidArgument => "InvalidArgument",
-            Self::WriteFailed => "WriteFailed",
         }
     }
 }
@@ -28,12 +25,6 @@ impl bun_core::output::ErrName for Error {
     }
 }
 
-impl From<core::fmt::Error> for Error {
-    fn from(_: core::fmt::Error) -> Self {
-        Self::WriteFailed
-    }
-}
-
 impl From<crate::streaming::ArgError> for Error {
     fn from(e: crate::streaming::ArgError) -> Self {
         match e {
diff --git a/src/clap/lib.rs b/src/clap/lib.rs
index ad9651910f29..9e5024ad8787 100644
--- a/src/clap/lib.rs
+++ b/src/clap/lib.rs
@@ -334,11 +334,6 @@ impl Diagnostic {
             crate::Error::InvalidArgument => {
                 bun_core::pretty_errorln!("<red>error<r><d>:<r> Invalid Argument '{}'", name)
             }
-            _ => bun_core::pretty_errorln!(
-                "<red>error<r><d>:<r> {} while parsing argument '{}'",
-                err,
-                name
-            ),
         }
         bun_core::Output::flush();
         Ok(())
diff --git a/src/errno/darwin_errno.rs b/src/errno/darwin_errno.rs
index 87c532f1d8b3..829ded7151d9 100644
--- a/src/errno/darwin_errno.rs
+++ b/src/errno/darwin_errno.rs
@@ -1,7 +1,6 @@
 // posix types live in `crate::posix` (moved from bun_sys).
 pub use crate::posix::E;
 pub use crate::posix::S;
-pub use crate::posix::mode_t as Mode;
 
 #[repr(u16)]
 #[derive(
diff --git a/src/errno/freebsd_errno.rs b/src/errno/freebsd_errno.rs
index 5d94073ed8f0..3eee07519175 100644
--- a/src/errno/freebsd_errno.rs
+++ b/src/errno/freebsd_errno.rs
@@ -1,7 +1,6 @@
 // posix types live in `crate::posix` (moved from bun_sys).
 pub use crate::posix::E;
 pub use crate::posix::S;
-pub use crate::posix::mode_t as Mode;
 
 #[repr(u16)]
 #[derive(
diff --git a/src/errno/linux_errno.rs b/src/errno/linux_errno.rs
index ad43842a23ba..df716ca29c02 100644
--- a/src/errno/linux_errno.rs
+++ b/src/errno/linux_errno.rs
@@ -1,7 +1,6 @@
 // posix types live in `crate::posix` (moved from bun_sys).
 pub use crate::posix::E;
 pub use crate::posix::S;
-pub use crate::posix::mode_t as Mode;
 
 #[repr(u16)]
 #[derive(
diff --git a/src/install/PackageManager/PackageManagerEnqueue.rs b/src/install/PackageManager/PackageManagerEnqueue.rs
index f0c91da56b53..a2c6a0e66a1b 100644
--- a/src/install/PackageManager/PackageManagerEnqueue.rs
+++ b/src/install/PackageManager/PackageManagerEnqueue.rs
@@ -15,6 +15,7 @@ use crate::_folder_resolver::{
     self as FolderResolution, FolderResolution as FolderResolutionValue, GlobalOrRelative,
     PackageWorkspaceSearchPathFormatter,
 };
+use crate::dependency;
 use crate::dependency::{DependencyExt as _, TagExt as _, VersionExt as _};
 use crate::lockfile::PackageIndexEntry;
 use crate::lockfile::package::Package;
@@ -30,7 +31,6 @@ use crate::repository_real::RepositoryExt as _;
 use crate::resolution::{
     NpmVersionInfo as ResolutionNpmValue, Tag as ResolutionTag, TaggedValue as ResolutionTagged,
 };
-use crate::{ManifestLoad, dependency};
 use bun_install::NetworkTask;
 use bun_install::{
     self as install, Behavior, Dependency, DependencyID, ExtractTarball, Features, Integrity, Npm,
@@ -1022,7 +1022,6 @@ pub fn enqueue_dependency_with_main_and_success_fn(
                                             &*scope,
                                             name_hash,
                                             Some(&mut expired),
-                                            ManifestLoad::LoadFromMemoryFallbackToDisk,
                                             needs_extended_manifest,
                                         )
                                     } {
@@ -2361,7 +2360,6 @@ fn get_or_put_resolved_package(
                 cache_ctx,
                 scope.get(),
                 name_hash,
-                ManifestLoad::LoadFromMemoryFallbackToDisk,
                 needs_ext,
             ) else {
                 return Ok(None); // manifest might still be downloading. This feels unreliable.
diff --git a/src/install/PackageManager/PopulateManifestCache.rs b/src/install/PackageManager/PopulateManifestCache.rs
index 79993c5fa0d0..c4a2ee22b6b3 100644
--- a/src/install/PackageManager/PopulateManifestCache.rs
+++ b/src/install/PackageManager/PopulateManifestCache.rs
@@ -4,7 +4,6 @@ use bun_core::Output;
 
 use crate::Dependency;
 use crate::DependencyID;
-use crate::ManifestLoad;
 use crate::NetworkTask;
 use crate::PackageID;
 use crate::Resolution;
@@ -190,7 +189,6 @@ pub fn populate_manifest_cache(
                     cache_ctx,
                     scope.get(),
                     pkg_name_slice,
-                    ManifestLoad::LoadFromMemoryFallbackToDisk,
                     needs_extended_manifest,
                 );
                 if cached.is_none() {
@@ -245,7 +243,6 @@ pub fn populate_manifest_cache(
                         cache_ctx,
                         scope.get(),
                         package_name,
-                        ManifestLoad::LoadFromMemoryFallbackToDisk,
                         needs_extended_manifest,
                     );
                     if cached.is_none() {
diff --git a/src/install/PackageManifestMap.rs b/src/install/PackageManifestMap.rs
index 342246927401..21d73cf53644 100644
--- a/src/install/PackageManifestMap.rs
+++ b/src/install/PackageManifestMap.rs
@@ -26,12 +26,6 @@ impl Value {
 type ManifestHashMap =
     HashMap<PackageNameHash, Value, bun_collections::IdentityContext<PackageNameHash>>;
 
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub enum CacheBehavior {
-    LoadFromMemory,
-    LoadFromMemoryFallbackToDisk,
-}
-
 /// By-value snapshot of the `PackageManager` fields the disk-fallback path of
 /// [`PackageManifestMap::by_name_hash_allow_expired`] reads.
 ///
@@ -61,14 +55,12 @@ impl PackageManifestMap {
         ctx: DiskCacheCtx,
         scope: &npm::registry::Scope,
         name: &[u8],
-        cache_behavior: CacheBehavior,
         needs_extended_manifest: bool,
     ) -> Option<&mut npm::PackageManifest> {
         self.by_name_hash(
             ctx,
             scope,
             StringBuilder::string_hash(name),
-            cache_behavior,
             needs_extended_manifest,
         )
     }
@@ -87,24 +79,14 @@ impl PackageManifestMap {
         ctx: DiskCacheCtx,
         scope: &npm::registry::Scope,
         name_hash: PackageNameHash,
-        cache_behavior: CacheBehavior,
         needs_extended_manifest: bool,
     ) -> Option<&mut npm::PackageManifest> {
-        self.by_name_hash_allow_expired(
-            ctx,
-            scope,
-            name_hash,
-            None,
-            cache_behavior,
-            needs_extended_manifest,
-        )
+        self.by_name_hash_allow_expired(ctx, scope, name_hash, None, needs_extended_manifest)
     }
 
-    /// Memory-only lookup — equivalent to `by_name_hash` with
-    /// `CacheBehavior::LoadFromMemory`, but without the `ctx`/`scope`
-    /// parameters: the memory-only arm never reads them. Exposed separately so callers
-    /// holding `&mut PackageManager` can borrow only the disjoint
-    /// `pm.manifests` field.
+    /// Memory-only lookup: no disk fallback, so no `ctx`/`scope`. Exposed
+    /// separately so callers holding `&mut PackageManager` can borrow only
+    /// the disjoint `pm.manifests` field.
     pub(crate) fn by_name_hash_in_memory(
         &mut self,
         name_hash: PackageNameHash,
@@ -121,7 +103,6 @@ impl PackageManifestMap {
         scope: &npm::registry::Scope,
         name: &[u8],
         is_expired: Option<&mut bool>,
-        cache_behavior: CacheBehavior,
         needs_extended_manifest: bool,
     ) -> Option<&mut npm::PackageManifest> {
         self.by_name_hash_allow_expired(
@@ -129,7 +110,6 @@ impl PackageManifestMap {
             scope,
             StringBuilder::string_hash(name),
             is_expired,
-            cache_behavior,
             needs_extended_manifest,
         )
     }
@@ -145,25 +125,8 @@ impl PackageManifestMap {
         scope: &npm::registry::Scope,
         name_hash: PackageNameHash,
         is_expired: Option<&mut bool>,
-        cache_behavior: CacheBehavior,
         needs_extended_manifest: bool,
     ) -> Option<&mut npm::PackageManifest> {
-        if cache_behavior == CacheBehavior::LoadFromMemory {
-            let entry = self.hash_map.get_mut(&name_hash)?;
-            return match entry {
-                Value::Manifest(m) => Some(m),
-                Value::Expired(m) => {
-                    if let Some(expiry) = is_expired {
-                        *expiry = true;
-                        Some(m)
-                    } else {
-                        None
-                    }
-                }
-                Value::NotFound => None,
-            };
-        }
-
         match self.hash_map.entry(name_hash) {
             Entry::Occupied(occ) => {
                 let value_ptr = occ.into_mut();
diff --git a/src/install/lib.rs b/src/install/lib.rs
index 11258ad52a84..bcfa7c503a67 100644
--- a/src/install/lib.rs
+++ b/src/install/lib.rs
@@ -198,10 +198,6 @@ pub mod package_manager {
         MapEntry as WorkspacePackageJsonCacheEntry, WorkspacePackageJSONCache,
     };
 
-    /// `PackageManifestMap.load` `When` enum — re-export the real enum so
-    /// callers naming either path agree on one type.
-    pub use crate::package_manifest_map::CacheBehavior as ManifestLoad;
-
     /// `CommandLineArguments.AuditLevel` (subset surfaced for
     /// `bun_runtime::cli::audit_command`). Re-exported alongside the full
     /// `command_line_arguments` module from `package_manager_real`.
@@ -285,14 +281,13 @@ pub use integrity::Integrity;
 
 pub use bin::Bin;
 pub use lockfile_real::bun_lock as TextLockfile;
-pub use patch_install as patch;
 
 pub use dependency::Tag as DependencyVersionTag;
 pub use extract_tarball::ExtractTarball;
 pub use lockfile::{LoadResult, LoadStep, Lockfile, PatchedDep};
 pub use package_manager::Options::LogLevel;
 pub use package_manager::{
-    GetJsonOptions, GetJsonResult, ManifestLoad, WorkspaceFilter, WorkspacePackageJsonCacheEntry,
+    GetJsonOptions, GetJsonResult, WorkspaceFilter, WorkspacePackageJsonCacheEntry,
 };
 pub use repository::{Repository, RepositoryExt};
 pub use resolution::Tag as ResolutionTag;
diff --git a/src/install/lockfile.rs b/src/install/lockfile.rs
index fdc2d43b1e3f..345d168b322e 100644
--- a/src/install/lockfile.rs
+++ b/src/install/lockfile.rs
@@ -1502,7 +1502,6 @@ impl Lockfile {
                         cache_ctx,
                         scope,
                         pkg_name_hash,
-                        Install::ManifestLoad::LoadFromMemoryFallbackToDisk,
                         false,
                     ) else {
                         continue;
diff --git a/src/jsc/ErrorCode.rs b/src/jsc/ErrorCode.rs
index 33c52881348f..a34dd8e031fb 100644
--- a/src/jsc/ErrorCode.rs
+++ b/src/jsc/ErrorCode.rs
@@ -45,7 +45,7 @@ impl GlobalObjectRef for crate::JSGlobalObject {
 type ErrorCodeInt = u16;
 
 /// `Bun::ErrorCode` in C++. Modelled as a newtype-over-`u16` so the same type
-/// can also carry the legacy sentinels (`PARSER_ERROR` / `JS_ERROR_OBJECT`)
+/// can also carry the legacy sentinel (`JS_ERROR_OBJECT`)
 /// without an exhaustive-match obligation.
 #[repr(transparent)]
 #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
@@ -66,7 +66,6 @@ include!(concat!(env!("BUN_CODEGEN_DIR"), "/ErrorCode.generated.rs"));
 // Legacy anyerror-wrapper sentinels.
 // ──────────────────────────────────────────────────────────────────────────
 impl ErrorCode {
-    pub(crate) const PARSER_ERROR: ErrorCodeInt = 0xFFFE;
     pub const JS_ERROR_OBJECT: ErrorCodeInt = 0xFFFD;
 }
 
@@ -170,13 +169,4 @@ impl<'a, G: GlobalObjectRef + ?Sized> ErrorBuilder<'a, G> {
     }
 }
 
-// C++ compares parser-error sentinels against these exported statics
-// (`extern "C" ZigErrorCode Zig_ErrorCodeParserError;`, headers-handwritten.h).
-
-#[unsafe(no_mangle)]
-static Zig_ErrorCodeParserError: ErrorCodeInt = ErrorCode::PARSER_ERROR;
-
-#[unsafe(no_mangle)]
-static Zig_ErrorCodeJSErrorObject: ErrorCodeInt = ErrorCode::JS_ERROR_OBJECT;
-
 // ported from: src/jsc/bindings/ErrorCode.ts
diff --git a/src/jsc/bindings/headers-handwritten.h b/src/jsc/bindings/headers-handwritten.h
index 6cb74be5243e..633dea655e8e 100644
--- a/src/jsc/bindings/headers-handwritten.h
+++ b/src/jsc/bindings/headers-handwritten.h
@@ -341,8 +341,6 @@ typedef struct {
 
 extern "C" const char* Bun__userAgent;
 
-extern "C" ZigErrorCode Zig_ErrorCodeParserError;
-
 extern "C" void ZigString__free(const unsigned char* ptr, size_t len, void* allocator);
 
 extern "C" bool Bun__transpileVirtualModule(
@@ -384,11 +382,6 @@ extern "C" bool Bun__VM__useIsolationSourceProviderCache(void* bunVM);
 extern "C" const char* Bun__version;
 extern "C" const char* Bun__version_with_sha;
 
-// Version exports removed - now handled by CMake-generated header (bun_dependency_versions.h)
-// Only keep the ones still exported from native code
-extern "C" const char* Bun__versions_uws;
-extern "C" const char* Bun__versions_usockets;
-
 extern "C" const char* Bun__version_sha;
 
 extern "C" void ZigString__freeGlobal(const unsigned char* ptr, size_t len);
diff --git a/src/jsc/generated.rs b/src/jsc/generated.rs
index 729e58c9eb60..4f97b65ede60 100644
--- a/src/jsc/generated.rs
+++ b/src/jsc/generated.rs
@@ -977,7 +977,7 @@ macro_rules! impl_js_class_via_generated {
 
 /// Expands to a `pub mod $mod` containing the standard `.classes.ts` codegen
 /// surface for a JS wrapper class: `from_js` / `from_js_direct` / `from_js_ref`
-/// / `to_js` / `to_js_unchecked` / `dangerously_set_ptr` / `get_constructor`,
+/// / `to_js` / `to_js_unchecked` / `get_constructor`,
 /// plus a cached-accessor pair per listed property.
 ///
 /// One impl, generated once — see
@@ -1039,9 +1039,7 @@ macro_rules! js_class_module {
             // to a non-null `*mut`). `__from_js*` only type-check the encoded
             // value and return the stored `m_ctx` pointer (or null) — the C++
             // side never dereferences `Payload`, so there is no Rust-side
-            // precondition. `__dangerously_set_ptr` keeps `unsafe`
-            // because it installs `ptr` into a GC cell whose finalizer will
-            // later free it (deferred deref → ownership precondition).
+            // precondition.
             $crate::jsc_abi_extern! {
                 #[allow(improper_ctypes)]
                 {
@@ -1053,8 +1051,6 @@ macro_rules! js_class_module {
                     safe fn __create(global: *mut JSGlobalObject, ptr: *mut Payload) -> JSValue;
                     #[link_name = concat!($TypeName, "__getConstructor")]
                     safe fn __get_constructor(global: &JSGlobalObject) -> JSValue;
-                    #[link_name = concat!($TypeName, "__dangerouslySetPtr")]
-                    fn __dangerously_set_ptr(value: JSValue, ptr: *mut Payload) -> bool;
                 }
             }
 
@@ -1107,20 +1103,6 @@ macro_rules! js_class_module {
             pub fn get_constructor(global: &JSGlobalObject) -> JSValue {
                 __get_constructor(global)
             }
-
-            /// Detach (`ptr = null`) or replace the wrapped native pointer on
-            /// an existing JS wrapper. Returns `false` if `value` is not (a
-            /// subclass of) the wrapper type.
-            ///
-            /// # Safety
-            /// Caller must ensure the previous `m_ctx` is finalized exactly
-            /// once elsewhere — the C++ side overwrites without freeing.
-            #[inline]
-            pub unsafe fn dangerously_set_ptr(value: JSValue, ptr: *mut Payload) -> bool {
-                // SAFETY: `value` is a valid encoded JSValue; the C++ side
-                // type-checks before writing `m_ctx`.
-                unsafe { __dangerously_set_ptr(value, ptr) }
-            }
         }
     };
 }
diff --git a/src/md/types.rs b/src/md/types.rs
index b9e3820b9b5b..1f452ce614bc 100644
--- a/src/md/types.rs
+++ b/src/md/types.rs
@@ -157,7 +157,6 @@ pub enum LineType {
     Hr,
     Atxheader,
     Setextunderline,
-    Setextheader,
     Indentedcode,
     Fencedcode,
     Html,
diff --git a/src/react_compiler/hir/environment_config.rs b/src/react_compiler/hir/environment_config.rs
index ea345bc15758..9982ecdd7cf9 100644
--- a/src/react_compiler/hir/environment_config.rs
+++ b/src/react_compiler/hir/environment_config.rs
@@ -52,10 +52,6 @@ impl Default for ExhaustiveEffectDepsMode {
     }
 }
 
-fn default_true() -> bool {
-    true
-}
-
 /// Compiler environment configuration. Contains feature flags and settings.
 ///
 /// Fields that would require passing JS functions across the JS/Rust boundary
diff --git a/src/runtime/api/bun/spawn.rs b/src/runtime/api/bun/spawn.rs
index 5cc3f756ac12..d3e602518add 100644
--- a/src/runtime/api/bun/spawn.rs
+++ b/src/runtime/api/bun/spawn.rs
@@ -16,6 +16,6 @@
 #[path = "spawn/stdio.rs"]
 pub mod stdio;
 
-pub use ::bun_spawn::posix_spawn::{BunSpawn, PosixSpawn, bun_spawn, posix_spawn};
+pub use ::bun_spawn::posix_spawn::{bun_spawn, posix_spawn};
 
 // `process` is re-exported from the `bun_spawn` workspace crate.
diff --git a/src/runtime/cli/outdated_command.rs b/src/runtime/cli/outdated_command.rs
index 0e3c7dfe61c7..0b624af75692 100644
--- a/src/runtime/cli/outdated_command.rs
+++ b/src/runtime/cli/outdated_command.rs
@@ -10,7 +10,7 @@ use bun_install::dependency::{self, Behavior};
 use bun_install::lockfile::package::PackageColumns as _;
 use bun_install::lockfile::{LoadResult, LoadStep};
 use bun_install::package_manager::{
-    LogLevel, ManifestLoad, Subcommand, WorkspaceFilter, populate_manifest_cache,
+    LogLevel, Subcommand, WorkspaceFilter, populate_manifest_cache,
 };
 use bun_install::{CommandLineArguments, DependencyID, PackageID, PackageManager, resolution};
 use bun_paths::{self as path, PathBuffer};
@@ -525,7 +525,6 @@ impl OutdatedCommand {
                     &scope,
                     package_name,
                     Some(&mut expired),
-                    ManifestLoad::LoadFromMemoryFallbackToDisk,
                     needs_extended,
                 ) else {
                     continue;
@@ -724,7 +723,6 @@ impl OutdatedCommand {
                     &scope,
                     package_name,
                     Some(&mut expired),
-                    ManifestLoad::LoadFromMemoryFallbackToDisk,
                     needs_extended,
                 ) else {
                     continue;
diff --git a/src/runtime/cli/update_interactive_command.rs b/src/runtime/cli/update_interactive_command.rs
index fbab8741e3a3..b6bb478345b6 100644
--- a/src/runtime/cli/update_interactive_command.rs
+++ b/src/runtime/cli/update_interactive_command.rs
@@ -13,8 +13,8 @@ use bun_install::dependency::{self, Behavior};
 use bun_install::lockfile::package::PackageColumns as _;
 use bun_install::lockfile::{LoadResult, LoadStep};
 use bun_install::package_manager::{
-    LogLevel, ManifestLoad, ROOT_PACKAGE_JSON_PATH, Subcommand, WorkspaceFilter,
-    install_with_manager, populate_manifest_cache,
+    LogLevel, ROOT_PACKAGE_JSON_PATH, Subcommand, WorkspaceFilter, install_with_manager,
+    populate_manifest_cache,
 };
 use bun_install::{
     CommandLineArguments, GetJsonOptions, GetJsonResult, INVALID_PACKAGE_ID, PackageID,
@@ -968,7 +968,6 @@ impl UpdateInteractiveCommand {
                     &scope,
                     package_name,
                     Some(&mut expired),
-                    ManifestLoad::LoadFromMemoryFallbackToDisk,
                     needs_extended,
                 ) else {
                     continue;
diff --git a/src/runtime/ffi/abi_type.rs b/src/runtime/ffi/abi_type.rs
index 32dc51c65896..36d83fe2b03e 100644
--- a/src/runtime/ffi/abi_type.rs
+++ b/src/runtime/ffi/abi_type.rs
@@ -213,7 +213,7 @@ impl ABIType {
         ToCFormatter { tag: self, symbol }
     }
 
-    pub fn to_js(self, symbol: &[u8]) -> ToJSFormatter<'_> {
+    pub(crate) fn to_js(self, symbol: &[u8]) -> ToJSFormatter<'_> {
         ToJSFormatter { tag: self, symbol }
     }
 
@@ -235,7 +235,7 @@ impl ABIType {
     }
 }
 
-pub struct ToCFormatter<'a> {
+pub(crate) struct ToCFormatter<'a> {
     pub(crate) symbol: &'a [u8],
     pub(crate) tag: ABIType,
 }
@@ -257,7 +257,7 @@ impl fmt::Display for ToCFormatter<'_> {
     }
 }
 
-pub struct ToJSFormatter<'a> {
+pub(crate) struct ToJSFormatter<'a> {
     pub(crate) symbol: &'a [u8],
     pub(crate) tag: ABIType,
 }
diff --git a/src/runtime/ffi/mod.rs b/src/runtime/ffi/mod.rs
index 3551e861c688..e9e2dee0ca26 100644
--- a/src/runtime/ffi/mod.rs
+++ b/src/runtime/ffi/mod.rs
@@ -142,4 +142,3 @@ pub use ffi_body::FFI;
 // ABIType — single source of truth lives in abi_type.rs
 // ═════════════════════════════════════════════════════════════════════════════
 mod abi_type;
-pub use abi_type::{ABI_TYPE_LABEL, ABIType, ToCFormatter, ToJSFormatter};
diff --git a/src/runtime/node/node_process.rs b/src/runtime/node/node_process.rs
index 61150b0befc1..a62c28df957a 100644
--- a/src/runtime/node/node_process.rs
+++ b/src/runtime/node/node_process.rs
@@ -101,20 +101,6 @@ static Bun__version_with_sha: CStrPtr = CStrPtr(
         .as_ptr()
         .cast::<c_char>(),
 );
-// Version exports removed - now handled by build-generated header (bun_dependency_versions.h)
-// The C++ code in BunProcess.cpp uses the generated header directly
-#[unsafe(no_mangle)]
-static Bun__versions_uws: CStrPtr = CStrPtr(
-    const_format::concatcp!(Environment::GIT_SHA, "\0")
-        .as_ptr()
-        .cast::<c_char>(),
-);
-#[unsafe(no_mangle)]
-static Bun__versions_usockets: CStrPtr = CStrPtr(
-    const_format::concatcp!(Environment::GIT_SHA, "\0")
-        .as_ptr()
-        .cast::<c_char>(),
-);
 #[unsafe(no_mangle)]
 static Bun__version_sha: CStrPtr = CStrPtr(
     const_format::concatcp!(Environment::GIT_SHA, "\0")
diff --git a/src/runtime/valkey_jsc/mod.rs b/src/runtime/valkey_jsc/mod.rs
index f2f717739ac1..0181c926c953 100644
--- a/src/runtime/valkey_jsc/mod.rs
+++ b/src/runtime/valkey_jsc/mod.rs
@@ -32,10 +32,9 @@ pub use self::js_valkey as js_valkey_body;
 
 // ─── public re-exports ───────────────────────────────────────────────────────
 pub use js_valkey::JSValkeyClient;
-pub use valkey::{Options, Protocol, Status, ValkeyClient};
 
 pub mod valkey_command {
-    pub use super::valkey_command_body::{Entry, Meta, Promise, PromisePair, entry, promise_pair};
+    pub use super::valkey_command_body::{Entry, PromisePair};
 }
 
 // ── JsClass wiring (codegen name = "RedisClient", see valkey.classes.ts) ────
diff --git a/src/runtime/webcore/FileReader.rs b/src/runtime/webcore/FileReader.rs
index 675393b58b00..d321e94bd335 100644
--- a/src/runtime/webcore/FileReader.rs
+++ b/src/runtime/webcore/FileReader.rs
@@ -108,7 +108,6 @@ pub enum ReadDuringJSOnPullResult {
     // TODO(refactor): `&'static mut` forge — sibling `static-widen-mut` pattern;
     // see note on `FileReader::pending_view`.
     Js(&'static mut [u8]),
-    AmountRead(usize),
     /// Borrows the reader/JS buffer for the duration of one `on_pull` call
     /// only. Holder-lifetime, not process-lifetime — `RawSlice<u8>` per
     /// `bun_ptr::Interned` Population-B triage.
@@ -1066,17 +1065,11 @@ impl FileReader {
                     }
                     return streams::Result::Owned(Vec::<u8>::move_from_list(buffered));
                 }
-                _ => {
-                    // Falls through to set
-                    // `pending_view = buffer`. The only variants reaching this arm
-                    // are `None` (impossible — we just stored `Js(buffer)` above and
-                    // `on_read_chunk` never sets `None`) and `AmountRead` (never
-                    // produced by `on_read_chunk`). Unreachable in the current state
-                    // machine; if that invariant ever changes, the buffer slice must
-                    // be recovered from a captured raw ptr+len before the move.
-                    unreachable!(
-                        "on_read_chunk never yields None/AmountRead while read_inside_on_pull == Js"
-                    );
+                ReadDuringJSOnPullResult::None => {
+                    // `Js(buffer)` was stored above and `on_read_chunk` never
+                    // replaces it with `None`. If that changes, recover the
+                    // buffer slice from a raw ptr+len before this move.
+                    unreachable!("on_read_chunk never yields None while read_inside_on_pull == Js");
                 }
             }
         }
diff --git a/src/runtime/webcore/Response.rs b/src/runtime/webcore/Response.rs
index c77d927653dc..1b5877c77bfd 100644
--- a/src/runtime/webcore/Response.rs
+++ b/src/runtime/webcore/Response.rs
@@ -163,12 +163,8 @@ impl Drop for BodyAbortListener {
     }
 }
 
-// `jsc.Codegen.JSResponse` — generated by `.classes.ts`. The Rust bindings
-// live in `bun_jsc::generated::JSResponse` (emitted by `js_class_module!`):
-// `from_js` / `from_js_direct` / `to_js` / `get_constructor` /
-// `dangerously_set_ptr` plus the cached-accessor pairs (`body_*_cached`,
-// `headers_*_cached`, `url_*_cached`, `statusText_*_cached`,
-// `stream_*_cached`).
+// `jsc.Codegen.JSResponse` — the real bindings, emitted by
+// `js_class_module!` in `bun_jsc::generated`.
 //
 // IMPORTANT: do NOT re-introduce `crate::webcore::jsc::codegen::JSResponse`
 // here — that module is a placeholder stub whose `to_js_unchecked` returns
diff --git a/src/runtime/webcore/streams.rs b/src/runtime/webcore/streams.rs
index f62a3363fbad..616472fbf5c2 100644
--- a/src/runtime/webcore/streams.rs
+++ b/src/runtime/webcore/streams.rs
@@ -79,9 +79,6 @@ pub enum Start {
 #[repr(u8)]
 #[derive(Copy, Clone, Eq, PartialEq, core::marker::ConstParamTy)]
 pub enum StartTag {
-    Empty,
-    Err,
-    ChunkSize,
     ArrayBufferSink,
     FileSink,
     HTTPSResponseSink,
@@ -90,9 +87,6 @@ pub enum StartTag {
     NetworkSink,
     FetchRequestBodySink,
     HTMLRewriterSink,
-    Ready,
-    OwnedAndDone,
-    Done,
 }
 
 impl Start {
@@ -161,8 +155,6 @@ impl Start {
             StartTag::HTMLRewriterSink => {
                 Self::from_js_with_tag::<{ StartTag::HTMLRewriterSink }>(global_this, value)
             }
-            // No `Start` variant carries these tags from JS.
-            _ => Self::from_js(global_this, value),
         }
     }
 
@@ -281,11 +273,6 @@ impl Start {
                     return Ok(Start::ChunkSize(chunk_size));
                 }
             }
-            _ => {
-                // Dead for every valid TAG; runtime unreachable until
-                // `generic_const_exprs` lets us hoist to a compile error.
-                unreachable!("Unsupported StartTag");
-            }
         }
 
         Ok(Start::Empty)
diff --git a/src/sha_hmac/lib.rs b/src/sha_hmac/lib.rs
index a64dd03bf3a1..9aab29fdbb59 100644
--- a/src/sha_hmac/lib.rs
+++ b/src/sha_hmac/lib.rs
@@ -9,4 +9,4 @@ pub use sha::evp;
 // Crate-root re-exports
 // so dependents can write `bun_sha_hmac::SHA256` / `bun_sha_hmac::generate`.
 pub use hmac::generate;
-pub use sha::{Algorithm, MD4, MD5, MD5_SHA1, SHA1, SHA224, SHA256, SHA384, SHA512, SHA512_256};
+pub use sha::{Algorithm, MD4, MD5, SHA1, SHA224, SHA256, SHA384, SHA512, SHA512_256};
diff --git a/src/sha_hmac/sha.rs b/src/sha_hmac/sha.rs
index 0a179500b43b..e10b370eaaaa 100644
--- a/src/sha_hmac/sha.rs
+++ b/src/sha_hmac/sha.rs
@@ -194,8 +194,6 @@ pub mod evp {
     new_evp!(SHA384, SHA384_DIGEST_LENGTH, EVP_sha384);
     new_evp!(SHA256, SHA256_DIGEST_LENGTH, EVP_sha256);
     new_evp!(SHA512_256, SHA512_256_DIGEST_LENGTH, EVP_sha512_256);
-    new_evp!(MD5_SHA1, 36, EVP_md5_sha1); // EVP_md5_sha1 writes MD5(16) || SHA1(20) = 36 bytes
-    new_evp!(Blake2, 256 / 8, EVP_blake2b256);
 
     // ──────────────────────────────────────────────────────────────────────
     // evp::Algorithm — moved from bun_jsc::api::bun::crypto,
@@ -274,7 +272,6 @@ pub mod evp {
 pub use evp::Algorithm;
 pub use evp::MD4;
 pub use evp::MD5;
-pub use evp::MD5_SHA1;
 pub use evp::SHA1;
 pub use evp::SHA224;
 pub use evp::SHA256;
@@ -296,26 +293,6 @@ pub mod hashers {
         boringssl_sys::SHA1_Final
     );
 
-    new_hasher!(
-        SHA512,
-        SHA512_DIGEST_LENGTH,
-        boringssl_sys::SHA512_CTX,
-        boringssl_sys::SHA512,
-        boringssl_sys::SHA512_Init,
-        boringssl_sys::SHA512_Update,
-        boringssl_sys::SHA512_Final
-    );
-
-    new_hasher!(
-        SHA384,
-        SHA384_DIGEST_LENGTH,
-        boringssl_sys::SHA512_CTX,
-        boringssl_sys::SHA384,
-        boringssl_sys::SHA384_Init,
-        boringssl_sys::SHA384_Update,
-        boringssl_sys::SHA384_Final
-    );
-
     new_hasher!(
         SHA256,
         SHA256_DIGEST_LENGTH,
@@ -325,24 +302,4 @@ pub mod hashers {
         boringssl_sys::SHA256_Update,
         boringssl_sys::SHA256_Final
     );
-
-    new_hasher!(
-        SHA512_256,
-        SHA512_256_DIGEST_LENGTH,
-        boringssl_sys::SHA512_CTX,
-        boringssl_sys::SHA512_256,
-        boringssl_sys::SHA512_256_Init,
-        boringssl_sys::SHA512_256_Update,
-        boringssl_sys::SHA512_256_Final
-    );
-
-    new_hasher!(
-        RIPEMD160,
-        boringssl_sys::RIPEMD160_DIGEST_LENGTH as usize,
-        boringssl_sys::RIPEMD160_CTX,
-        boringssl_sys::RIPEMD160,
-        boringssl_sys::RIPEMD160_Init,
-        boringssl_sys::RIPEMD160_Update,
-        boringssl_sys::RIPEMD160_Final
-    );
 }
diff --git a/src/spawn/lib.rs b/src/spawn/lib.rs
index 4725121ebca5..38116bd1c5bf 100644
--- a/src/spawn/lib.rs
+++ b/src/spawn/lib.rs
@@ -35,8 +35,6 @@ pub mod posix_spawn {
         pub use crate::process::{WindowsSpawnOptions, WindowsSpawnResult};
         pub use bun_spawn_sys::posix_spawn::bun_spawn::*;
     }
-    pub use bun_spawn as BunSpawn;
-    pub use bun_spawn_sys::posix_spawn::posix_spawn as PosixSpawn;
 }
 
 /// `Process` / `Poller` / `WaiterThread` / `spawn_process` / `sync` /
diff --git a/src/sql_jsc/jsc.rs b/src/sql_jsc/jsc.rs
index 1991c743fa4c..60505c2bd7f3 100644
--- a/src/sql_jsc/jsc.rs
+++ b/src/sql_jsc/jsc.rs
@@ -27,10 +27,9 @@ use core::ptr::NonNull;
 // ──────────────────────────────────────────────────────────────────────────
 
 pub use bun_jsc::{
-    ArrayBuffer, CallFrame, CoerceTo, ErrorBuilder, ErrorCode, ExternColumnIdentifier,
-    ExternColumnIdentifierValue, GlobalRef, JSArrayIterator, JSCell, JSGlobalObject, JSObject,
-    JSType, JSValue, JsCell, JsError, JsRef, JsResult, MarkedArgumentBuffer, StringJsc,
-    StrongOptional, ThrowFmtArgs, ZigStringJsc, bun_string_jsc, host_fn,
+    ArrayBuffer, CallFrame, ErrorBuilder, ErrorCode, ExternColumnIdentifier, GlobalRef,
+    JSArrayIterator, JSCell, JSGlobalObject, JSObject, JSType, JSValue, JsCell, JsError, JsRef,
+    JsResult, MarkedArgumentBuffer, StringJsc, StrongOptional, bun_string_jsc, host_fn,
 };
 
 /// Re-export — `bun_jsc` now defines `IntegerRange` at its crate root and the
@@ -523,7 +522,6 @@ pub mod api {
                 }
             }
         }
-        pub use SSLConfig as SslConfig;
     }
     /// PascalCase namespace alias.
     #[allow(non_snake_case)]
diff --git a/src/wyhash/lib.rs b/src/wyhash/lib.rs
index ae96362f6ed8..f5a85a21a6fc 100644
--- a/src/wyhash/lib.rs
+++ b/src/wyhash/lib.rs
@@ -932,8 +932,6 @@ pub const fn hash_const(seed: u64, input: &[u8]) -> u64 {
 }
 
 /// Integer-to-integer hashing (same width in, same width out).
-/// We cover the dedicated widths (16/32/64) via a sealed trait.
-/// All current callers pass `u32`.
 #[inline]
 pub fn hash_int<T: HashInt>(input: T) -> T {
     T::hash_int(input)
@@ -943,18 +941,6 @@ pub trait HashInt: Copy {
     fn hash_int(self) -> Self;
 }
 
-// Source: https://github.com/skeeto/hash-prospector
-impl HashInt for u16 {
-    #[inline]
-    fn hash_int(self) -> u16 {
-        let mut x = self;
-        x = (x ^ (x >> 7)).wrapping_mul(0x2993);
-        x = (x ^ (x >> 5)).wrapping_mul(0xe877);
-        x = (x ^ (x >> 9)).wrapping_mul(0x0235);
-        x ^ (x >> 10)
-    }
-}
-
 // Source: https://github.com/skeeto/hash-prospector
 impl HashInt for u32 {
     #[inline]
@@ -967,19 +953,6 @@ impl HashInt for u32 {
     }
 }
 
-// Source: https://github.com/jonmaiga/mx3
-impl HashInt for u64 {
-    #[inline]
-    fn hash_int(self) -> u64 {
-        const C: u64 = 0xbea2_25f9_eb34_556d;
-        let mut x = self;
-        x = (x ^ (x >> 32)).wrapping_mul(C);
-        x = (x ^ (x >> 29)).wrapping_mul(C);
-        x = (x ^ (x >> 32)).wrapping_mul(C);
-        x ^ (x >> 29)
-    }
-}
-
 // ════════════════════════════════════════════════════════════════════════════
 // Tests
 // ════════════════════════════════════════════════════════════════════════════
diff --git a/test/internal/source-lints/dead-symbols-install-webcore-sha.test.ts b/test/internal/source-lints/dead-symbols-install-webcore-sha.test.ts
new file mode 100644
index 000000000000..df29302e622c
--- /dev/null
+++ b/test/internal/source-lints/dead-symbols-install-webcore-sha.test.ts
@@ -0,0 +1,125 @@
+// Guards against reintroduction of symbols removed as dead code from
+// install, runtime/webcore, jsc, sha_hmac, and several leaf crates. Each
+// entry was verified to have zero references across src/, src/codegen/,
+// src/js/, and build/debug/codegen/ before deletion, and the full build
+// links without the removed no_mangle exports.
+//
+// This is a source-tree lint: it reads files from src/ and does not touch
+// the built binary, so it belongs in test/internal/source-lints/ per the
+// README.
+
+import { expect, test } from "bun:test";
+import { readFileSync } from "node:fs";
+import path from "node:path";
+
+const repoRoot = path.resolve(import.meta.dir, "..", "..", "..");
+
+function src(p: string): string {
+  return readFileSync(path.join(repoRoot, p), "utf8");
+}
+
+function resurrected(checks: Array<[string, RegExp]>): string[] {
+  return checks.filter(([file, re]) => re.test(src(file))).map(([file, re]) => `${file}: ${re.source}`);
+}
+
+test("dead Rust symbols (install, webcore, jsc, leaf crates) do not reappear", () => {
+  const checks: Array<[string, RegExp]> = [
+    // install: CacheBehavior's LoadFromMemory variant was never constructed,
+    // so the enum carried no information and was removed along with its
+    // parameter. The memory-only path is by_name_hash_in_memory.
+    ["src/install/PackageManifestMap.rs", /pub enum CacheBehavior\b/],
+
+    // runtime/node: version statics with no readers. C++ reads
+    // BUN_VERSION_USOCKETS / BUN_VERSION_UWS from the generated
+    // bun_dependency_versions.h instead (since #22561).
+    ["src/runtime/node/node_process.rs", /static Bun__versions_uws:/],
+    ["src/runtime/node/node_process.rs", /static Bun__versions_usockets:/],
+
+    // jsc: sentinel statics never read from C++, and the PARSER_ERROR const
+    // whose only use they were.
+    ["src/jsc/ErrorCode.rs", /static Zig_ErrorCodeParserError:/],
+    ["src/jsc/ErrorCode.rs", /static Zig_ErrorCodeJSErrorObject:/],
+    ["src/jsc/ErrorCode.rs", /const PARSER_ERROR: ErrorCodeInt/],
+
+    // jsc: js_class_module! emitted a dangerously_set_ptr wrapper plus its
+    // extern import in every instantiation; no instantiation called it.
+    ["src/jsc/generated.rs", /__dangerouslySetPtr/],
+
+    // webcore: StartTag variants never constructed; only the 8 sink tags are
+    // used as START_TAG consts and const-generic args.
+    ["src/runtime/webcore/streams.rs", /pub enum StartTag \{[^}]*OwnedAndDone/],
+    // webcore: never produced by on_read_chunk.
+    ["src/runtime/webcore/FileReader.rs", /AmountRead\(usize\)/],
+
+    // sha_hmac: deprecated-API hashers with no callers (only SHA1 and SHA256
+    // have consumers), plus unused evp types.
+    ["src/sha_hmac/sha.rs", /SHA512_Init,\s*\n\s*boringssl_sys::SHA512_Update/],
+    ["src/sha_hmac/sha.rs", /RIPEMD160_Init/],
+    ["src/sha_hmac/sha.rs", /new_evp!\(MD5_SHA1/],
+    ["src/sha_hmac/sha.rs", /new_evp!\(Blake2,/],
+
+    // wyhash: hash_int's single caller instantiates u32.
+    ["src/wyhash/lib.rs", /impl HashInt for u16\b/],
+    ["src/wyhash/lib.rs", /impl HashInt for u64\b/],
+
+    // clap: never-constructed variant and the From impl that was its only
+    // would-be constructor.
+    ["src/clap/error.rs", /WriteFailed/],
+
+    // md: never constructed or matched.
+    ["src/md/types.rs", /Setextheader/],
+
+    // react_compiler: zero references.
+    ["src/react_compiler/hir/environment_config.rs", /fn default_true\b/],
+  ];
+  expect(resurrected(checks)).toEqual([]);
+});
+
+test("dead C++ header declarations do not reappear", () => {
+  const checks: Array<[string, RegExp]> = [
+    // Declarations for the removed Rust statics above; nothing on the C++
+    // side ever read them.
+    ["src/jsc/bindings/headers-handwritten.h", /Bun__versions_uws/],
+    ["src/jsc/bindings/headers-handwritten.h", /Bun__versions_usockets/],
+    ["src/jsc/bindings/headers-handwritten.h", /Zig_ErrorCodeParserError/],
+  ];
+  expect(resurrected(checks)).toEqual([]);
+});
+
+test("unused re-export names do not reappear", () => {
+  const checks: Array<[string, RegExp]> = [
+    // Each name was unreferenced under the re-exported path; the underlying
+    // items (where they still exist) are reached via their own modules.
+    ["src/install/lib.rs", /pub use patch_install as patch;/],
+    ["src/install/lib.rs", /CacheBehavior as ManifestLoad/],
+    ["src/sql_jsc/jsc.rs", /pub use SSLConfig as SslConfig;/],
+    ["src/sql_jsc/jsc.rs", /ExternColumnIdentifierValue/],
+    ["src/api/lib.rs", /NpmRegistryMap/],
+    ["src/bundler_jsc/PluginRunner.rs", /as FsPath/],
+    ["src/bundler_jsc/lib.rs", /ErrorableString/],
+    ["src/errno/linux_errno.rs", /mode_t as Mode/],
+    ["src/errno/darwin_errno.rs", /mode_t as Mode/],
+    ["src/errno/freebsd_errno.rs", /mode_t as Mode/],
+    ["src/spawn/lib.rs", /posix_spawn as PosixSpawn/],
+    ["src/runtime/api/bun/spawn.rs", /\bPosixSpawn\b/],
+    ["src/runtime/ffi/mod.rs", /pub use abi_type::/],
+    ["src/runtime/valkey_jsc/mod.rs", /pub use valkey::\{Options/],
+  ];
+  expect(resurrected(checks)).toEqual([]);
+});
+
+test("stale build-script entries do not reappear", () => {
+  // Note: the fail-before gate stashes src/ only, so these script checks are
+  // regression guards rather than part of the fail-before proof.
+  const checks: Array<[string, RegExp]> = [
+    // src/asan-config.c (the glob's last match) was deleted in #29655; the
+    // pattern silently matched nothing.
+    ["scripts/glob-sources.ts", /"src\/\*\.c"/],
+    // Generated #define BUN_DEP_* block was write-only; BunProcess.cpp reads
+    // only the BUN_VERSION_* constants.
+    ["scripts/build/depVersionsHeader.ts", /BUN_DEP_/],
+    // Computed, stored, never read.
+    ["scripts/build/config.ts", /kqueue/],
+  ];
+  expect(resurrected(checks)).toEqual([]);
+});