fix: unify password validation across Signup, ForgotPassword and ResetPassword

[Aryanbansal-05]

…tPassword

🔐 Summary

Resolves #1976 by standardizing password validation rules across all three authentication flows — Signup, ForgotPassword, and ResetPassword.

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🛠️ Changes Made

1. Frontend/src/utils/validatePassword.js — New Shared Utility

Created a reusable validatePassword function enforcing:

• Minimum 8 characters
• At least one lowercase letter
• At least one uppercase letter
• At least one number

2. Frontend/src/pages/ForgotPassword.jsx

• Replaced weak 6-character-only check with shared validatePassword utility
• Updated button disabled condition from length < 6 to length < 8

3. Frontend/src/pages/ResetPassword.jsx

• Replaced length-only check with shared validatePassword utility
• Now enforces full complexity requirements on password reset

4. Frontend/src/pages/Signup.jsx

• Fixed passwordRules from { minLength: 6 } to { minLength: 8, requireUppercase: true, requireNumber: true }
• Ensures getPasswordValidation enforces the same complexity as other flows

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🛡️ Security Issues Fixed

• ✅ ForgotPassword no longer allows weak 6-character passwords
• ✅ ResetPassword now enforces complexity, not just length
• ✅ All three flows now enforce identical password policy

---

Closes #1976

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[riteshbonthalakoti]

Hi @Aryanbansal-05! Thanks for the contribution. I have triaged your PR and set it to merge into the gssoc branch.

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[riteshbonthalakoti]

Superb implementation, @Aryanbansal-05! I've successfully resolved all conflicts in your PR and queued it for merging into gssoc.

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[riteshbonthalakoti]

Hi @Aryanbansal-05! Thanks for the contribution. I have triaged your PR and set it to merge into the gssoc branch.

⚠️ MANDATORY GSSOC ONBOARDING STEPS:
Before your PR points are finalized on the leaderboard, you MUST complete these required steps:

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Welcome to the HELPDESK.AI developer family! 🚀💻

[riteshbonthalakoti]

Hi @Aryanbansal-05! Thanks for the contribution. I have triaged your PR and set it to merge into the gssoc branch.

⚠️ MANDATORY GSSOC ONBOARDING STEPS:
Before your PR points are finalized on the leaderboard, you MUST complete these required steps:

1. ⭐ Star this repository: https://github.com/ritesh-1918/HELPDESK.AI (Mandatory)
2. 👤 Follow the Project Admin: https://github.com/ritesh-1918 (Mandatory)
3. 💼 Connect on LinkedIn: https://www.linkedin.com/in/ritesh1908/ (Mandatory)

Welcome to the HELPDESK.AI developer family! 🚀💻

[riteshbonthalakoti]

Superb implementation, @Aryanbansal-05! I've successfully resolved all conflicts in your PR and queued it for merging into gssoc.

⚠️ MANDATORY STEPS FOR LEADERBOARD CREDITS:
To ensure you receive full points, please make sure you have taken 10 seconds to:

• Give us a Star ⭐: https://github.com/ritesh-1918/HELPDESK.AI (Mandatory)
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• Let's connect on LinkedIn 💼: https://www.linkedin.com/in/ritesh1908/ (Mandatory)

Keep up the outstanding work! Let's build together! 🔥