Use URL authorities for radar artifact filters

[rudycelekli]

Derive Radar artifact flags from URL authorities

Radar search currently recognizes artifact domains anywhere in URL text, so an unrelated query, userinfo or lookalike hostname can satisfy has_paper, has_repo and has_dataset filters. Parse HTTP(S) URLs and use exact normalized first-party authorities while preserving the existing arXiv/GitHub domain indicators and HF/Kaggle dataset path prefix. These flags report URL indicators; page existence and page type are unverified. Skip non-string artifact entries accepted by the snapshot reader.

Validation:

• Focused query suite: 60 passed in 2.47s.
• Original source: 10 failed, 19 passed, 31 deselected in 0.41s. Removing the fix: 10 failed, 19 passed, 31 deselected in 0.37s.
• Earlier helper: 11 failed, 18 passed, 31 deselected in 0.29s. Boundary mutant: 11 failed, 18 passed, 31 deselected in 0.57s. Controls cover arXiv abs/pdf/html/format/src/legacy ftp paths in main and artifact URL locations.

Full clean-checkout validation

Exact signed head: 8024a917e76404ac03bd432090350976868edeb7. Recursive paper submodule initialized at its repository-pinned commit. All six required commands pass:

• ruff check .
• ruff format --check .
• benchmark-radar normalize-catalog
• benchmark-radar classify
• benchmark-radar build-data-release
• pytest -q: 1494 passed, no skipped tests

The rebuilt corpus retains 3,212 records, five sources, and 67 snapshots. Generated outputs are not committed. Signed commit with DCO sign-off. GitHub checks are separate from these local results.

[rudycelekli]

Agent-authored PR annotation: 330226 GPT.

[ktwu01]

Closing as not planned. One author now has a cap of 10 open issues + PRs, and this account had 56 open PRs and 11 open issues, mostly paired with each other. We merged the three changes that fix silent data loss in the corpus (#723, #774, and #773 once rebased) and are closing the rest so review stays possible.

This is not a verdict that the change is wrong. If you think this one matters, reopen it later when you are under the cap, one at a time, with a reproduction from a real user or caller rather than a hypothetical edge case.

不是否定这个改动本身。为保证评审能跟上，同一作者最多同时保留 10 个未关闭的 issue/PR；该账号曾有 56 个未关闭 PR 和 11 个 issue。已合并修复语料静默丢失的三个改动，其余先关闭。若认为本条重要，请在低于上限后逐个重新打开，并附真实用户或调用方的复现。

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