Initial import of PS5 Web File Manager v1.7

Homebrew HTTP file manager payload for jailbroken PS5 consoles (x86_64-sie-ps5,
title id FMGR88888). Browse, edit, upload, download and extract ZIPs through
any browser on the LAN; single self-contained ELF, no external services.

Highlights (v1.7):
- ZIP large-file profile (large=1): 2 TiB total / 1 TiB per entry / 1000:1
  ratio. Frontend prompts for confirmation whenever archive > 60 GiB on disk.
- Default ZIP profile stays safe: 512 GiB / 64 GiB / 200:1.
- 69 host-side C tests (tests/run-tests.sh) covering traversal, ZIP64,
  encryption rejection, conflict policies and the large-file profile.
- Three-phase extraction engine (scan -> extract -> publish -> cleanup) with
  atomic staging + rename, located in src/zip_extract.{c,h}.

Project layout:
  src/          C payload sources
  assets/       HTML / CSS / JS / icons / param.json
  tests/        POSIX/host test suite + fixtures
  third_party/  vendored zlib + minizip-ng (zlib license)
  docs/screenshots/  README screenshot images
  LICENSE       GPLv3+

Build:
  make         # cross-compile with PS5_PAYLOAD_SDK
  make linux   # Linux host binary for UI dev

Makefile

@@ -0,0 +1,90 @@
+ifneq ($(filter-out linux linux-deps clean,$(MAKECMDGOALS)),)
+  ifdef PS5_PAYLOAD_SDK
+    include $(PS5_PAYLOAD_SDK)/toolchain/prospero.mk
+  else
+    $(error PS5_PAYLOAD_SDK is undefined)
+  endif
+endif
+ifeq ($(MAKECMDGOALS),)
+  ifdef PS5_PAYLOAD_SDK
+    include $(PS5_PAYLOAD_SDK)/toolchain/prospero.mk
+  else
+    $(error PS5_PAYLOAD_SDK is undefined)
+  endif
+endif
+
+VERSION_TAG := v1.7
+TITLE_ID    := FMGR88888
+PYTHON      ?= python3
+STRIP       ?= $(PS5_PAYLOAD_SDK)/bin/prospero-strip
+PKG_CONFIG  ?= $(PS5_PAYLOAD_SDK)/bin/prospero-pkg-config
+HOST_CC     ?= cc
+HOST_STRIP  ?= strip
+HOST_PKG_CONFIG ?= pkg-config
+
+BIN        := web-file-mgr.elf
+LINUX_BIN  := web-file-mgr-linux
+COMMON_SRCS := src/main.c src/websrv.c src/filemgr.c src/file_response.c src/task.c src/upload.c src/download.c src/text.c src/list.c src/space.c src/fs_util.c src/json_util.c src/path_util.c src/asset.c src/mime.c src/notify.c src/pkg_installer.c src/pkg_info.c src/extract.c src/zip_extract.c
+PS5_SRCS    := $(COMMON_SRCS) src/app_installer.c
+LINUX_SRCS  := $(COMMON_SRCS)
+BASE_ASSETS := $(filter-out %.dds,$(wildcard assets/*))
+ifneq ($(filter linux,$(MAKECMDGOALS)),)
+ASSETS      := $(BASE_ASSETS)
+else
+ASSETS      := $(filter-out assets/icon0.png,$(BASE_ASSETS))
+endif
+GEN_SRCS    := $(patsubst assets/%,gen/%, $(ASSETS:=.c))
+
+# Vendored minizip-ng + zlib, compiled with relaxed warnings (third-party code).
+THIRD_PARTY_SRCS   := $(wildcard third_party/zlib/src/*.c) $(wildcard third_party/minizip-ng/src/*.c)
+THIRD_PARTY_CFLAGS := -O2 -w -Ithird_party/zlib/include -Ithird_party/minizip-ng/include \
+  -DHAVE_ZLIB -DZLIB_COMPAT -DHAVE_UNISTD_H=1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
+PS5_TP_OBJS   := $(patsubst %.c,ps5-obj/%.o,$(THIRD_PARTY_SRCS))
+LINUX_TP_OBJS := $(patsubst %.c,linux-obj/%.o,$(THIRD_PARTY_SRCS))
+
+CFLAGS := -Oz -fno-asynchronous-unwind-tables -fno-unwind-tables -Wall -Werror -ffunction-sections -fdata-sections -Isrc -Ithird_party/minizip-ng/include -DVERSION_TAG=\"$(VERSION_TAG)\" -DTITLE_ID=\"$(TITLE_ID)\"
+CFLAGS += `$(PKG_CONFIG) libmicrohttpd --cflags`
+LDFLAGS := -Wl,--gc-sections
+LDADD  := `$(PKG_CONFIG) libmicrohttpd --libs`
+LDADD  += -lSceIpmi -lSceAppInstUtil -lSceUserService
+LINUX_CFLAGS := -O2 -flto -Wall -Werror -Isrc -Ithird_party/minizip-ng/include -DVERSION_TAG=\"$(VERSION_TAG)\" -DTITLE_ID=\"$(TITLE_ID)\"
+LINUX_CFLAGS += `$(HOST_PKG_CONFIG) libmicrohttpd --cflags`
+LINUX_LDADD := `$(HOST_PKG_CONFIG) libmicrohttpd --libs` -pthread
+
+.PHONY: all linux deps linux-deps clean
+
+all: deps $(BIN)
+
+linux: linux-deps $(LINUX_BIN)
+
+deps:
+	@$(PKG_CONFIG) --exists libmicrohttpd || ./install-libmicrohttpd.sh
+
+linux-deps:
+	@$(HOST_PKG_CONFIG) --exists libmicrohttpd || \
+	  (echo "libmicrohttpd development package is required for make linux" >&2; exit 1)
+
+gen:
+	mkdir gen
+
+clean:
+	rm -rf $(BIN) $(LINUX_BIN) gen ps5-obj linux-obj
+
+gen/%.c: assets/% gen-asset-module.py | gen
+	$(PYTHON) gen-asset-module.py --path $* $< > $@
+
+ps5-obj/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(CC) $(THIRD_PARTY_CFLAGS) -c -o $@ $<
+
+linux-obj/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(HOST_CC) $(THIRD_PARTY_CFLAGS) -c -o $@ $<
+
+$(BIN): $(PS5_SRCS) $(GEN_SRCS) $(PS5_TP_OBJS)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(filter %.c,$^) $(PS5_TP_OBJS) $(LDADD)
+	$(STRIP) $@
+
+$(LINUX_BIN): $(LINUX_SRCS) $(GEN_SRCS) $(LINUX_TP_OBJS)
+	$(HOST_CC) $(LINUX_CFLAGS) -o $@ $(filter %.c,$^) $(LINUX_TP_OBJS) $(LINUX_LDADD)
+	$(HOST_STRIP) $@