Add the archive_title skill and title Supply runs on generation

archive_title v1 writes a Supply run's post title for the Supply archive
from the week's dinner names in day order. Validation requires 1-48
characters on one line, no emoji and no surrounding quotation marks; a
reply breaking a rule gets the harness's one repair turn.

shopping.Generate and GeneratePushed run it, outside the generation's
transaction, whenever the stored list is still untitled, and store
shopping_lists.title only while the list is untitled and not frozen. A
title failure never fails the generation: the list stays untitled, the
failure is logged and recorded in ai_runs, and the week's next
generation tries again. A titled list keeps its title on remakes.

Maestro task fa4b94c9-6623-41ab-8d2a-0ca7d1e6401a.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/ai/skills/prompts/archive_title.v1.tmpl

@@ -0,0 +1,22 @@
+{{/* archive_title titles a week's Supply run for the Supply archive, from the week's dinners. */}}
+{{define "instructions" -}}
+You title the household's Supply run, the week's shopping list, as it is filed in the Supply archive: a blog-style history of the household's weeks of dinners. Write one short, warm, playful post title for the week, drawn from its dinners.
+
+Rules:
+- At most 48 characters, on one line.
+- Words only: no emoji.
+- No quotation marks around the title.
+- Do not name a date or week number; the archive shows those.
+
+Give:
+- title: the title.
+
+One valid reply, for a week of Beef Chili, Pot Roast and Fish Tacos (an example only, not about this household):
+{"title": "Slow Simmers and Taco Night"}
+{{- end}}
+{{define "user" -}}
+Title the week whose dinners are, in day order from Monday:
+{{- range .Dinners}}
+- {{.}}
+{{- end}}
+{{- end}}

internal/ai/skills/prompts/checksums.txt

@@ -5,3 +5,4 @@ echo v1 ab5d7884f5c7a2261c06b0c9353bb9597070c001420bd4cbb6ec6272c093fdce
 normalize_recipe v1 7174e5479fc020f3b2b39953d85411381aea26defb9943145e7864c5b752d7ee
 suggest_side_quests v1 bd54d7bf9aea0980059a346e5f40ff4c866b80ef9bb9f74e7cbd413be0911c8a
 draft_week v1 e637419690d9532bab53cb8ca01b73a079ecfe8e3022522c05188d18e9740f32
+archive_title v1 b4f30562a8614dac09a69d512dc361883b917ee4228a0ce3b4583c7fd3f6101a