docs: assess marisaimpact.com for Honkai Impact 3rd, and decline it

Its conduct is the cleanest of anything looked at here — a robots.txt of pure
comments, no directive, no Content-Signal, and a plain 200 to our own
User-Agent — so the reason not to build it is entirely in the data, and is worth
writing down rather than re-deriving next time the URL is offered.

The calendar prints no year anywhere, and heads its only date row "Estimated
date for Regional Servers" over a page that says the schedule is the CN
server's. Every date it could publish would therefore be a guess twice over: a
year we inferred, on a boundary the page itself declines to stand behind. The
week-column grid also rounds an end to a bucket rather than to a printed day,
and the URL carries the version number, so a SOURCES entry pinned to calendar89
would be publishing history from tomorrow.

The markup is recorded anyway, because it is readable and that is not the
problem — if the site ever states a year and a real regional schedule, the work
is a positional parser and nothing else.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

AGENTS.md

@@ -315,6 +315,7 @@ re-litigated each pass:
 | `guardian-tales.fandom.com` | **Declined.** Parses fine and contains no 2026 date at all — newest dated entry is 2025. The `bluearchive.fandom.com` failure again: parses cleanly to nothing live |
 | `blhx.fandom.com`, `azurlane-archive.fandom.com` | **Declined.** The two Fandom alternatives to the declined koumakan wiki are dead archives — `Event_Calendar` stops in **2021**, and the archive wiki's headings have nothing under them. Azur Lane still has no source |
 | Aether Gazer | **Do not build.** The developer confirmed no further content updates after 23 July 2026, with store listings removed 17 October 2026. The wiki dates nothing anyway — `Event_Guide_List` is an image gallery. A lane that will be empty by winter |
+| `marisaimpact.com` (Honkai Impact 3rd) | **Declined** (2026-08-19). Conduct is clear — its `robots.txt` is comments only, with no directive and no `Content-Signal`, and the page answers our own `User-Agent` with a `200`. The data is the problem: the schedule is a grid of week columns headed `Estimated date for Regional Servers` under a page that says `Based on CN server`, it states **no year anywhere**, and it lives at a per-version URL — `/calendar89` is v8.9 and expires on 20 August, with no stable route to the current one. `docs/SOURCES.md` § 13 |
 | game8.co hubs for Black Beacon, Brawl Stars, Destiny: Rising, Diablo Immortal, Epic Seven, Fire Emblem Shadows, Gundam UC Engage, Mongil: Star Dive, Pokémon Champions, Pokémon UNITE, Tower of Fantasy | **Declined** (2026-08-19). All thirteen hubs in that sweep exist and answer `200`; these eleven have no usable schedule. Six are abandoned wikis whose newest page is 2021–2025 — the Infinity Nikki failure mode, a source that parses perfectly and publishes history. Gundam's calendar prints ends with no starts, so no event ID; Pokémon UNITE is fresh but its template fails `canParse`, which is the check working. Per-game evidence in `docs/SOURCES.md` § 12 |
 | `game8.co/games/MementoMori`, `game8.co/games/fire-emblem-heroes` | **Assessed, not yet built** (2026-08-19) — the two live finds of that sweep, and proposals rather than decisions. MementoMori parses today with no parser change; FEH has the freshest page of any source here and needs a ninth Game8 column shape plus a ruling on the 180-day rule, which one real seven-month banner breaks. See `docs/SOURCES.md` §§ 12a–12b |