Come funziona la griglia di qualificazione

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• The 2026/2027 grids are NOT published. The extraNat season selector tops out at '2025 / 2026' (checked 2026-07-26; idsai=2027 returns no competitions), so this dataset is the currently applicable set even though several of its meets have already been held.
• One cell disagrees between the two official FFN sources: Challenge National, MESSIEURS, 1500 nage libre, '19 ans et plus'. extraNat = 16:29.77, règlement PDF p.48 = 16:32.77. This dataset uses extraNat (the live grid). Rationale: 16:32.77 would make the 19+ standard SLOWER than the 18-year-old standard (16:30.90), which contradicts every other row in every grid. All other 594 cells agree exactly between the two documents.
• MAJOR RULE CHANGE — the categories named in older material no longer exist. From 2026 the FFN abandoned Avenirs / Benjamins / Juniors (« 2026 voit l'abandon de la classification des compétiteurs par catégorie, exit avenirs, benjamins, juniors ») in favour of U12–U18 + SENIORS, keyed to the age reached during the calendar year, i.e. year of birth. There is no longer a 'Championnats de France Juniors' — the equivalent meet is the Championnats de France U18.
• Column structure is gender-asymmetric in the Challenge National grid: women get 5 columns ending in '18 ans et plus', men get 6 ending in '19 ans et plus'. Consumers must not assume a symmetric grid.
• The U14 column of the U18 50m and Challenge National grids is published as '10-14 ans (2012 - 2016)', so it is encoded as birthYears 2012–2016. The règlement's prose definition of U14 is looser ('nés en 2012 et après', no lower bound); the grid's 2016 floor is used because it is what the published table states.
• Short-course (25 m) national championships carry NO qualifying-time table and are therefore absent from this dataset. Championnats de France Élite 25m (22-25 Oct) and Championnats de France U18 25m (8-12 Dec) qualify purely on 50 m ranking position — e.g. Élite 25m takes the top 48 (50 free), 64 (100 free), 56 (200 free), 48 (400 free), 32 (800/1500 free) French swimmers from the 50 m season rankings arrested 31 August; U18 25m takes ranks 12/14/14/12/10/8 per year of age. No times exist to extract.
• Championnats de France U13 25m 'Lucien-ZINS' (17-19 Dec 2026) DOES use a qualifying-time grid, in 25 m, but the règlement prints the whole table as 'Publication fin juillet' — it was still unpublished at retrieval (2026-07-26, checked on ffnatation.fr and extraNat). This is the one genuinely missing parent-facing FFN grid; nothing was guessed for it.
• Every grid is 50 m only (« Temps à réaliser exclusivement en bassin de 50 mètres »), so the dataset contains no SCM cells.
• The 'Effectif'/'Rk' columns present in the U18 50m and Open d'Été grids (12/14/16/8) are ranking depths, not times, and are deliberately not stored; they are described in each standardSet's description.
• Meeting a time is sufficient but not the only route: the U18/Open sets top up their fields from rankings when too few swimmers hit the time, and Élite/Open entry can also be earned by finishing top 4 at the France U18 25m or the Challenge National webconfront@tion. A time-only lookup will under-report who is qualified.
• FFN does not state exact season boundary dates. season.start/end are approximated from the règlement's rule that no competition may be declared between 1 and 15 September; every standardSet carries its own literal qualification window in validity, which is the authoritative date range.
• Modeling fix 2026-07-26 (no time value changed): the AGE_18PLUS and AGE_19PLUS predicates referenced "dec31_of_season", which resolves to 31 December of the season's START year (2025) and made a 2008-born swimmer 17 and a 2007-born swimmer 18. FFN classifies by the age reached during the competition calendar year, so both now reference the explicit date 2026-12-31: born 2008 = 18 (18 ans et plus), born 2007 = 19 (SENIORS).