feat: release notes for 0.1.7; archive 0.1.7 iso; bump version to 0.1.8

Cut the 0.1.7 release (docs/tutorials, HTML man pages, updated man pages,
libc floating-point formatting, DOOM missing-WAD warning, ramdisk copy fix).
Archive the 0.1.7 ISO, publish it to the website, refresh release notes and
the downloads page, and open the 0.1.8 dev cycle (apiVersion 9, BuildNo reset).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

archives/releasenotes.txt

@@ -1,3 +1,34 @@
+MontaukOS 0.1.7 (July 9, 2026)
+    (9b66d3f4703b9d4d19d1a7f37aff8d36fb076f7c)
+
+New
+====
+    * The libc printf-family functions now support floating-point (decimal) formatting, so Lua and other programs print decimal numbers correctly
+    * DOOM now shows a warning when no WAD game-data file is present rather than crashing
+    * Manual pages updated to document current MontaukOS
+
+Fixed
+=====
+    * Fixed ramdisk file copies being incorrectly created as directories rather than files
+
+Included in ISO
+================
+
+    * MontaukOS SMP kernel
+    * Userspace bootstrap (0:/os/init.elf) and other essential system utilities
+    * MontaukOS desktop environment and graphical apps
+    * Manual pages (0:/man), readable via man command
+    * System CA certificates (0:/os/certs/ca-certificates.crt)
+    * Intel Bluetooth controller firmware (0:/os/firmware/intel)
+    * Third-party license texts and notices (0:/os/licenses)
+    * Tiny C Compiler (tcc) with MontaukOS headers and libraries (0:/lib/tcc)
+    * Lua 5.4 interpreter (lua) with headers and static library (0:/lib/lua)
+    * Flat Remix icon pack
+    * JetBrains Mono, Noto Serif, Roboto, and C059 Roman (open Century Schoolbook) TrueType fonts
+    * DOOM engine with SDL_mixer audio support (game data not included)
+    * Experimental HTTP server (httpd) and default page (0:/www/index.html)
+    * Default wallpaper - blossoms by Nikhil Kumar, Unsplash (0:/os/wallpapers)
+
 MontaukOS 0.1.6 (July 8, 2026) - hotfix
     (ce5f4075138f22865fec6f583c7cfb0272a17676)