docs: Sphinx manuel joueur/admin/dev + build HTML

Manuel complet DauphinCraft v0.1.0 : 14 pages RST (joueur, admin,
dev, annexes), conf.py rtd-theme, Makefile/make.bat, build HTML propre.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/conf.py

@@ -0,0 +1,28 @@
+# -- Project information -----------------------------------------------------
+project = "DauphinCraft"
+copyright = "2026, Baptiste Moulin"
+author = "Baptiste Moulin"
+release = "0.1.0"
+
+# -- General configuration ---------------------------------------------------
+extensions = [
+    "sphinx.ext.autosectionlabel",
+    "sphinx.ext.todo",
+    "myst_parser",
+]
+source_suffix = {".rst": "restructuredtext", ".md": "markdown"}
+master_doc = "index"
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
+language = "fr"
+
+# -- HTML output -------------------------------------------------------------
+html_theme = "sphinx_rtd_theme"
+html_theme_options = {
+    "navigation_depth": 4,
+    "collapse_navigation": False,
+    "sticky_navigation": True,
+    "style_nav_header_background": "#0b3d5c",
+}
+html_title = "DauphinCraft — Manuel joueur et serveur"
+html_short_title = "DauphinCraft"
+html_static_path = ["_static"]