feat: rename to paperspec and add the website

- Rename manuspec to paperspec everywhere outside pixi.toml: prose, the
  tools, provenance tool names and the fixture key derivations, so every
  fixture and vector is rebuilt.
- Move the namespace addresses under the site, mirroring the repository:
  schema $id https://paperspec.scient.ing/schemas/<file>, the JSON-LD
  context https://paperspec.scient.ing/context/scienting-1.jsonld, and
  term IRIs https://paperspec.scient.ing/vocab#<term>. Format
  identifiers (scienting-*) and URNs (urn:scienting:) are unchanged.
- tools/site.py (standard library only) builds _site/: every file of the
  repository at its own path, each Markdown file rendered as a page with
  sidebar navigation, heading anchors matching the forge's, folder
  listings, a vocabulary page for the context's IRIs, a heading search
  and a 404 page; light and dark themes.
- check.py builds the site and checks that every Markdown file has a
  page, every internal link and fragment resolves, no Markdown is left
  unrendered, and every $id, the context address and the vocabulary IRIs
  are files of the site.
- deploy/: a Caddyfile with the media types and CORS the data needs, and
  a guide; .gitea/workflows/site.yml builds on main and publishes with
  rsync when the SITE_* secrets are set.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/build.py

@@ -43,7 +43,7 @@ def H(s):
 
 
 def secret(name):
-    return hashlib.sha256(("manuspec fixture key: " + name).encode()).digest()
+    return hashlib.sha256(("paperspec fixture key: " + name).encode()).digest()
 
 
 KEYS = {
@@ -52,7 +52,7 @@ KEYS = {
     "ben-spot": {"name": "Ben Example", "role": "editor", "purposes": ["spot-check"]},
     "cara": {"name": "Cara Example", "role": "reader", "purposes": ["sign"]},
 }
-TEAM_SECRET = hashlib.sha256(b"manuspec fixture team secret: smithlab").digest()
+TEAM_SECRET = hashlib.sha256(b"paperspec fixture team secret: smithlab").digest()
 
 
 def roster():
@@ -517,8 +517,8 @@ def package_files(src, key, names, side, final, records, receipts=None, roster_r
         files["roster.json"] = (jcs.dumps(roster_rec) + "\n").encode()
     files["witnesses.json"] = (jcs.dumps({"witnesses": witnesses}) + "\n").encode()
     files["provenance.json"] = (jcs.dumps({
-        "tools": [{"name": "manuspec tools/build.py", "version": VERSION}],
-        "stages": [{"stage": "hand", "processor": "local", "tool": "manuspec tools/build.py"}],
+        "tools": [{"name": "paperspec tools/build.py", "version": VERSION}],
+        "stages": [{"stage": "hand", "processor": "local", "tool": "paperspec tools/build.py"}],
         "note": "Built by hand for the conformance suite; every reading is synthetic."}) + "\n").encode()
     levels = RC.effective_levels(nodes, vals, receipts or [], ROSTER_BY_ID if roster_rec else {})
     d = dict(src["document"])
@@ -1127,7 +1127,7 @@ def wr(out, rel, rec):
         f.write((jcs.dumps(rec) + "\n").encode() if not isinstance(rec, bytes) else rec)
 
 
-CTX = ["http://www.w3.org/ns/anno.jsonld", "https://scient.ing/ns/scienting/1.jsonld"]
+CTX = ["http://www.w3.org/ns/anno.jsonld", "https://paperspec.scient.ing/context/scienting-1.jsonld"]
 
 
 def ann_hash(a):