## What
The admin Discord channel is Spanish, but the four scheduled `stats:*`
reports posted English. They now post Spanish, and the three
cohort/experiment reports open with a short AI-written summary so a
reader understands the situation without decoding the table.
### 1. Spanish reports
`stats:daily-report`, `stats:subscription-funnel`,
`stats:experiment-funnel` and `stats:ai-cohort-report` now post Spanish
embed titles, field names, ASCII table headers, legends and disclaimers,
with Spanish dates (`sáb., 13 jun. 2026`). Table headers and cells stay
ASCII (`Semana`, `Variante`, `UMad`, `pdte`, …) so `sprintf`'s byte
padding keeps the columns aligned inside the code block.
Hardcoded, not `__()`: this is an internal channel, not user-facing UI,
so it never needs a second language and doesn't belong in
`lang/es.json`. Everything else — code, comments, PHPDoc, command
descriptions, `$this->info()` — stays English.
### 2. AI summary (best-effort)
New `ReportSummarizer` + `ReportSummaryAgent` (laravel/ai, same
Gemini-Flash pattern and `AI_PROVIDER` switch as the other AI features,
config in `config/ai_reports.php`). It prepends a few sentences to the
embed description that compare the current period against the previous
one (week over week for the two weekly reports, month over month for the
monthly cohort one), say what got better or worse, and call out
explicitly when a figure isn't conclusive — small sample, immature
cohort, signup surge week, or no previous period.
- **Data**: only what each collector already computes. The two cohort
reports pass their weekly series with the per-metric maturity flags; the
experiment report passes the per-variant figures plus the
already-rendered significance verdict (one source of truth), with money
figures nulled exactly where the table renders `—`, so the summary can't
report a zero where the reader sees no data.
- **Previous period**: the experiment report has no time series, so each
run caches its figures (with a capture timestamp) as the next run's
baseline. A same-day manual re-run doesn't overwrite it, and the model
is told to flag a gap that isn't roughly one period.
- **Degrades safely**: no API key, a provider outage, a bad provider
name or a slow response (30s timeout) → the report is posted unchanged,
without the summary. Transient provider errors are logged; anything else
is reported, matching `CategorizeTransactions` /
`LaravelAiRuleSuggestionGenerator`.
### 3. Fix found while reviewing: Discord's embed limits
The translated "Cómo leerlo" field came out at 1152 characters, past
Discord's 1024-character cap on a field value — Discord rejects the
**whole** payload, so the experiment funnel would have silently stopped
appearing in the channel every Monday (`DiscordWebhook` only logs the
400). Both long fields are now tighter (745 and 898 chars),
`DiscordWebhook` trims anything still over the limit instead of losing
the report, and a test measures every scheduled report's embed so
growing copy fails in CI rather than in production.
## Testing
- `tests/Feature/Ai/ReportSummarizerTest.php`: baseline in/out, same-day
re-run, dry run, backtick stripping, truncation, empty answer,
transient-vs-reported failures.
- `tests/Feature/DiscordReportEmbedLimitsTest.php`: all four embeds
inside Discord's limits, plus the trimming fallback.
- The four command tests: Spanish assertions, summary is the first thing
in the description, and the report is still posted when the AI throws.
- 64 tests / 338 assertions pass locally, plus PHPStan and Pint.
## QA
Ran all four commands against the local DB with `--no-discord` (and
dumped the real webhook payloads with the Discord call faked). Real
Gemini output, e.g. the experiment funnel on the second run:
> No se ha producido ningún cambio en las métricas del experimento
respecto a la ejecución previa del 10 de agosto de 2026. La tasa de
conversión sobre usuarios maduros se mantiene en el 4,7 % para la
variante reducida, el 4,0 % para pay_now y el 3,7 % para el control. Las
cifras no son conclusivas ya que las diferencias entre variantes no son
estadísticamente significativas, con un p-valor de 0,593 frente al
umbral α de 0,017.
Also verified with an unreachable provider: the report renders in full,
without the summary.
## Not included
- `stats:stuck-cohort-report` is still English. It posts to the same
webhook but isn't scheduled in `routes/console.php`, so it was out of
the four active reports; worth its own decision.
- The `—` and `⚡` cells are still a couple of bytes off inside the code
block (multibyte in `sprintf`). Pre-existing on `main`, unchanged here.
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