Count pending work: BGG's export lags, so raw queue rows lie

The card read "1 version updates" while upload said "skipping 1 already
done". Both were right. Recon on the live site shows the update DID
apply — the version cell reads "English first edition Year: 2012" and
its radio is checked — but BGG's XML collection export still reports
that collid with no version, even on a forced refresh. diff reads the
API, so it re-queued finished work; the log correctly refused it.

Nothing to fix in the flow: the pipeline card now counts PENDING jobs
(queue rows minus what the log completed) for both to_add and
to_update, reports outstanding failures rather than every failure ever
logged, and when everything queued is already applied it says so and
names the cause. Documented under "BGG's collection export lags the
site" so the next person doesn't chase it as a bug.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g

data/to_update.csv

@@ -1,37 +1,2 @@
 collid,bgg_id,bgg_name,version_id,version_name
-53429559,240,Britannia,24621,Avalon Hill second edition
-53429530,71,Civilization,24006,Avalon Hill first edition 1981
-53429542,177,Advanced Civilization,24972,English edition
-53429504,3090,Doctor Who: The Game of Time & Space,25782,English edition
-53429482,3585,Sorcerer: The Game of Magical Conflict,211154,SPI Designer's Edition
-53429367,2524,StarForce 'Alpha Centauri': Interstellar Conflict in the 25th Century,219137,SPI boxed designer's edition
-53429816,224,History of the World,20727,Avalon Hill/Hasbro edition
-53429636,9209,Ticket to Ride,294188,English edition 2012 with Spiel des Jahres logo
-53430595,13,Catan,347121,English edition 2016
-53430485,1219,Labyrinth,488621,English edition 2017
-53429649,137909,Bugs in the Kitchen,216474,English first edition
-53430142,27710,Catan Dice Game,606657,English edition 2018
-53429953,169784,Castle Panic: The Dark Titan,260454,English first edition
-53429666,147370,Robot Turtles,231664,English second edition
-53430559,43443,Castle Panic,103068,"English edition, fourth printing"
-53429632,24310,The Red Dragon Inn,374258,English fifth edition
-53429748,39856,Dixit,296529,Asmodee/Libellud English edition 2015
-53430257,35505,Walk the Plank!,781669,English MDG-4311 edition
-53430020,164,"Before I Kill You, Mister Bond",28465,"Cheapass black and white ""Better Edition"" edition"
-148198097,181304,Mysterium,536289,English edition 2018-2
-53429887,65244,Forbidden Island,31208,English edition 051210
-53429908,95386,Tempurra,290572,English edition
-53430200,258,Fluxx,20840,Looney Labs Version v2.1
-148198100,312786,Poetry for Neanderthals,514050,English edition 2020
-53430332,188614,Simon's Cat Card Game,779792,"English edition, second printing"
-53429850,4324,Risk: The Lord of the Rings,26859,English edition 2002
-53429933,1927,Munchkin,28144,"English edition 2009, 15th printing"
-53430007,1784,Dark Cults,110926,First edition
-53429986,176,Give Me the Brain!,27673,Czech edition
-53430040,257,Kill Doctor Lucky,520364,"Cheapass envelope edition, second printing"
-53612880,153999,"...and then, we held hands.",280845,English edition
-53612866,166976,Consentacle,410382,English Kickstarter edition
-53430652,231302,The Cat Game,361880,English/French edition
-53430517,40692,Small World,294178,English third edition
-53429718,172503,Mage Wars Academy,265107,English edition
 53429642,104710,Wiz-War (Eighth Edition),117685,English first edition