Core Rule Set: Forgejo's searches at a branch or tag, of releases and of job logs pass (closes #350)

`testdata/forgejo-requests.txt` records these Forgejo 17.0.1 searches with the hard values, file names and plain words, and the code search with code and a page opened from each search. `forgejo.conf` lets them through:

- the code search at a branch or tag, where the home page's search box sends its search without a code indexer: `q` skips what it skips on gitea's code search, and `Referer` what it skips after gitea's searches;
- the release search, page and API: `q` skips 930120, 932120, 932160, 932250 and 932260, since it matches tag names;
- the job log search in the API: the same, without 932160.

In `gitea.conf`, `q` on the branch and package searches also skips 932160, so `/bin/sh` passes there. `SPEC.md` lists both.

Model: opus-5-5

internal/coreruleset/forgejo.conf

@@ -19,3 +19,99 @@ SecRule REQUEST_FILENAME "@rx ^/[^/]+/[^/]+/wiki/search$" \
     ctl:ruleRemoveTargetById=932160;ARGS:q,\
     ctl:ruleRemoveTargetById=932250;ARGS:q,\
     ctl:ruleRemoveTargetById=932260;ARGS:q"
+
+# Forgejo's search of a repository's code at a branch or a tag sends the text
+# searched for in q. The search box on a repository's home page sends it there
+# when Forgejo has no code indexer, as by default. A branch or tag name can
+# hold a slash, as feat/docker-support does. q skips there the rules it skips
+# on gitea's search of code (900600 in gitea.conf). Among them, these refused
+# Forgejo's searches there:
+#   930120: .htaccess
+#   932120: powershell
+#   932160: /bin/sh
+#   932250: ls -la
+#   932260: python3
+# Forgejo has no owner named api, so a path under /api/ gets none of this.
+SecRule REQUEST_FILENAME "@rx ^/[^/]+/[^/]+/search/(?:branch|tag)/.+$" \
+    "id:900681,phase:1,pass,nolog,chain"
+    SecRule REQUEST_FILENAME "!@rx ^/api/" \
+        "ctl:ruleRemoveTargetById=930110;ARGS:q,\
+        ctl:ruleRemoveTargetById=930120;ARGS:q,\
+        ctl:ruleRemoveTargetById=931100;ARGS:q,\
+        ctl:ruleRemoveTargetById=932120;ARGS:q,\
+        ctl:ruleRemoveTargetById=932130;ARGS:q,\
+        ctl:ruleRemoveTargetById=932140;ARGS:q,\
+        ctl:ruleRemoveTargetById=932160;ARGS:q,\
+        ctl:ruleRemoveTargetById=932235;ARGS:q,\
+        ctl:ruleRemoveTargetById=932250;ARGS:q,\
+        ctl:ruleRemoveTargetById=932260;ARGS:q,\
+        ctl:ruleRemoveTargetById=932380;ARGS:q,\
+        ctl:ruleRemoveTargetById=933100;ARGS:q,\
+        ctl:ruleRemoveTargetById=933130;ARGS:q,\
+        ctl:ruleRemoveTargetById=933135;ARGS:q,\
+        ctl:ruleRemoveTargetById=934100;ARGS:q,\
+        ctl:ruleRemoveTargetById=934110;ARGS:q,\
+        ctl:ruleRemoveTargetById=934130;ARGS:q,\
+        ctl:ruleRemoveTargetById=941100;ARGS:q,\
+        ctl:ruleRemoveTargetById=941110;ARGS:q,\
+        ctl:ruleRemoveTargetById=941160;ARGS:q,\
+        ctl:ruleRemoveTargetById=941180;ARGS:q,\
+        ctl:ruleRemoveTargetById=941390;ARGS:q,\
+        ctl:ruleRemoveTargetById=942100;ARGS:q,\
+        ctl:ruleRemoveTargetById=942140;ARGS:q,\
+        ctl:ruleRemoveTargetById=942190;ARGS:q,\
+        ctl:ruleRemoveTargetById=942230;ARGS:q,\
+        ctl:ruleRemoveTargetById=944100;ARGS:q,\
+        ctl:ruleRemoveTargetById=944110;ARGS:q,\
+        ctl:ruleRemoveTargetById=944130;ARGS:q"
+
+# A page opened from the results of that search has the search's address in
+# Referer, which skips these rules then, as after gitea's searches (900601 in
+# gitea.conf):
+#   941110: <script>
+#   941120: onClick={
+#   941160: <img src=
+#   942100: LIKE '%foo%'
+#   944100: java.lang.Runtime
+# A path under /api/ is left out here too.
+SecRule REQUEST_HEADERS:Referer \
+    "@rx ^https?://[^/]+/[^/]+/[^/]+/search/(?:branch|tag)/[^?]+\?" \
+    "id:900684,phase:1,pass,nolog,chain"
+    SecRule REQUEST_HEADERS:Referer "!@rx ^https?://[^/]+/api/" \
+        "ctl:ruleRemoveTargetById=941110;REQUEST_HEADERS:Referer,\
+        ctl:ruleRemoveTargetById=941120;REQUEST_HEADERS:Referer,\
+        ctl:ruleRemoveTargetById=941160;REQUEST_HEADERS:Referer,\
+        ctl:ruleRemoveTargetById=942100;REQUEST_HEADERS:Referer,\
+        ctl:ruleRemoveTargetById=944100;REQUEST_HEADERS:Referer"
+
+# Forgejo's search of a repository's releases, on its page and in the API,
+# matches q against each release's title and tag. A tag name can hold a slash.
+# q skips these rules there:
+#   930120: .htaccess
+#   932120: powershell
+#   932160: /bin/sh
+#   932250: ls -la
+#   932260: python3
+# Forgejo has no owner named api, so /api/v1/releases is not one.
+SecRule REQUEST_FILENAME "@rx ^/(?:api/v1/repos/)?[^/]+/[^/]+/releases$" \
+    "id:900682,phase:1,pass,nolog,chain"
+    SecRule REQUEST_FILENAME "!@rx ^/api/[^/]+/releases$" \
+        "ctl:ruleRemoveTargetById=930120;ARGS:q,\
+        ctl:ruleRemoveTargetById=932120;ARGS:q,\
+        ctl:ruleRemoveTargetById=932160;ARGS:q,\
+        ctl:ruleRemoveTargetById=932250;ARGS:q,\
+        ctl:ruleRemoveTargetById=932260;ARGS:q"
+
+# The API's search of a job's log sends the text searched for in q, which
+# skips these rules there:
+#   930120: .htaccess
+#   932120: powershell
+#   932250: ls -la
+#   932260: python3
+SecRule REQUEST_FILENAME \
+    "@rx ^/api/v1/repos/[^/]+/[^/]+/actions/jobs/[0-9]+/logs$" \
+    "id:900683,phase:1,pass,nolog,\
+    ctl:ruleRemoveTargetById=930120;ARGS:q,\
+    ctl:ruleRemoveTargetById=932120;ARGS:q,\
+    ctl:ruleRemoveTargetById=932250;ARGS:q,\
+    ctl:ruleRemoveTargetById=932260;ARGS:q"