Qualify the dynamic-example exclusion and selection timing

Dynamic examples share IDs and URLs with dynamic-content tasks but have different acceptance contracts; the dynamic-content contracts are kept. State that the 530-task selection was documented after outcomes were available and is a rule-based cohort boundary, not a pre-outcome or representative selection. Label the 550-task export guidance as the historical v2.x edition. Archive/manifest rebuilt (source_revision a71b0b0f); make check: 37 tests OK, task_count 530.

README.md

@@ -116,14 +116,15 @@ tasks. It is the active v3.0.0 edition. The 550-task catalog also counted two
 10-task example groups from the mixed webfetch suite:
 
 - The 10 dynamic examples have the same IDs and URLs as tasks in the dedicated
-  100-task dynamic-content suite. Counting both would count those targets twice,
-  so only the dynamic-content entries are selected.
+  100-task dynamic-content suite. Counting both would count those targets twice.
+  Their acceptance contracts differ; the dynamic-content contracts are the ones
+  selected.
 - The 10 challenge examples (Amazon, JD, Xiaohongshu, Zhihu, Douban, Dianping,
   Reddit, IMDb, Anthropologie and JustWatch list pages) are an example group.
   They stay available as a separate challenge set and are not counted in the
   edition. Only three share a URL with another selected task.
 
-The selection file records this policy. Historical editions are unchanged.
+The selection file records this policy. This selection was documented after outcomes were available; it is a rule-based cohort boundary, not a pre-outcome selection protocol or a representative sample. Historical editions are unchanged.
 
 The revision uses the explicit [530-task selection](definitions/populations/primary-content-20261103.json): 130 webfetch tasks and 100 each from dynamic-content, popular-sites, access-restrictions and articles. The excluded 20 webfetch entries remain in the historical frozen files. Matching dynamic-content entries remain selected under their own suite identity.
 
@@ -289,7 +290,7 @@ uv run --frozen lexbench-webfetch export \
   --output /absolute/path/new-input-directory
 ```
 
-The scorer's `--suite webfetch` exports the mixed 150-task suite, including 20 dynamic/challenge examples. For the 430-task edition, select its 130 general-web, document and media IDs plus the three 100-task suites. For the 550-task edition, select all 150 mixed tasks, those three suites and the 100 article tasks (`--suite articles`). Export verifies inputs before writing a new directory. See [reference inputs and access](https://github.com/lexmount/webstone/blob/main/docs/reference-inputs.md).
+The scorer's `--suite webfetch` exports the mixed 150-task suite, including 20 dynamic/challenge examples. For the 430-task edition, select its 130 general-web, document and media IDs plus the three 100-task suites. For the historical 550-task (v2.x) edition, select all 150 mixed tasks, those three suites and the 100 article tasks (`--suite articles`). Export verifies inputs before writing a new directory. See [reference inputs and access](https://github.com/lexmount/webstone/blob/main/docs/reference-inputs.md).
 
 Score a saved response using its complete task definition:
 

VERSIONING.md

@@ -12,7 +12,7 @@ Dataset tags are independent of Webstone's software version.
 | [v1.0.0](https://huggingface.co/datasets/Lexmount/LexBench-Web-Fetch/tree/v1.0.0) | 430 | Earlier population: 100 each for general web, dynamic sites, popular sites and access restrictions, plus 10 embedded documents, 17 media-information tasks and 3 direct-media tasks | The four original suites' task, catalog and source-input hashes match `bench-v1.0.0`; seven viewer groups select the 430-task population |
 | [v2.1.0](https://huggingface.co/datasets/Lexmount/LexBench-Web-Fetch/tree/v2.1.0) | 550 | Expanded catalog: the 430-task population, 100 article tasks and 20 additional dynamic/challenge examples | Uses the existing 2.1.0 catalog declaration and reviewed reference/scoring provenance, following the earlier `bench-v2.0.1` snapshot |
 | [v2.2.0](https://huggingface.co/datasets/Lexmount/LexBench-Web-Fetch/tree/v2.2.0) | 550 | Same population and task hashes as v2.1.0 | Corrects references and acceptance with the reviewed primary-content task scope revision; rescore saved outputs before comparing with v2.1.0 |
-| [v3.0.0](https://huggingface.co/datasets/Lexmount/LexBench-Web-Fetch/tree/v3.0.0) | 530 | The 430-task population plus 100 article tasks, as listed in `definitions/populations/primary-content-20261103.json` | Removes the 10 dynamic examples duplicated in the dynamic-content suite and moves the 10 challenge examples to a separate uncounted set. Major because tasks are removed; report separately from v2.x |
+| [v3.0.0](https://huggingface.co/datasets/Lexmount/LexBench-Web-Fetch/tree/v3.0.0) | 530 | The 430-task population plus 100 article tasks, as listed in `definitions/populations/primary-content-20261103.json` | Stops counting the 10 dynamic examples, which share IDs and URLs with dynamic-content tasks (their acceptance contracts differ; the dynamic-content contracts are kept), and moves the 10 challenge examples to a separate uncounted set. Major because tasks are removed; report separately from v2.x. |
 
 The 550-task catalog follows the earlier 430-task population, and the 530-task
 v3.0.0 edition follows the 550-task catalog. Adding or removing tasks starts a

definitions.tar.gz

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7490ed26213a89a9c2beed62b24897eeb3e036b96f29e781de883ff77d0e7abb
-size 6909850
+oid sha256:bc1ff8dd5de1b1497483993b47dbe28a51dd532e835e6006a7f4862e10c1692d
+size 6909901

manifest.json

@@ -1,8 +1,8 @@
 {
   "archive": {
     "path": "definitions.tar.gz",
-    "sha256": "7490ed26213a89a9c2beed62b24897eeb3e036b96f29e781de883ff77d0e7abb",
-    "size": 6909850
+    "sha256": "bc1ff8dd5de1b1497483993b47dbe28a51dd532e835e6006a7f4862e10c1692d",
+    "size": 6909901
   },
   "datasets": {
     "access-restrictions": {
@@ -91,8 +91,8 @@
       "size": 2084
     },
     "VERSIONING.md": {
-      "sha256": "b93834ffe21f3feececf40a3c29f4e42bb02c3f8dce328e5bb0ed76029b41750",
-      "size": 5398
+      "sha256": "728007cf607e9224f76529ddd35c2db5d21bcfa69084aa7cd0aea0c7c303ecf3",
+      "size": 5496
     },
     "data/access-restrictions.jsonl": {
       "sha256": "fc4e0a67760198b3001e85ef8c47062e97243a7072c69a6fd34f96063fd2fca3",