[Tools] Period Tracker: add v1.0

[gorshunovr]

Application Submission

Period Tracker is a Flipper Zero app for multi-user menstrual cycle tracking. It supports per-person profiles, event logging (period starts and symptoms), cycle predictions (next period, PMS, ovulation/fertile window where applicable), statistical learning from history, a daily digest of upcoming alerts, cycle statistics with regularity/confidence, and optional 4-digit PIN protection. All data stays on the SD card (CSV + profile files).

Source: https://github.com/gorshunovr/period_tracker
Commit: 193770d1a4421d681ed736ee455e15fc36019bfd
Category: Tools
Version: 1.0

Extra Requirements

• No extra hardware.
• Requires SD card storage (standard for Flipper apps using apps_data).
• Compatible with firmware 1.3.4+ / API 86.0+ (validated against release SDK 1.4.3).

Author Checklist (Fill this out)

• I've read the contribution guidelines and my PR follows them
• I own the code I'm submitting or have code owner's permission to submit it
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have validated the manifest file(s) with python3 tools/bundle.py --nolint applications/CATEGORY/APPID/manifest.yml bundle.zip

AI usage disclosure (Fill this out):

• Partially AI assisted (clarify below which code was AI assisted and briefly explain what it does).

• Fully AI generated (explain what all the generated code does in moderate detail).

• AI tools were used for catalog packaging and documentation (manifest, README/catalog description cleanup, test data generator packaging, PR preparation). Core application C sources and scenes were written and maintained as the project itself; AI also assisted earlier development iterations on the app.

Reviewer Checklist (Don't fill this out!)

• Bundle is valid
• There are no obvious issues with the source code
• I've ran this application and verified its functionality