docs(timeline): update 2025 section and add 2026 details for community growth and events

[endersonmenezes]

This pull request updates the docs/timeline.md file to provide more accurate and detailed information about the project's progress in 2025 and 2026. The changes clarify the timeline, update community statistics, and add more granular data about events and mentorship activities.

Timeline and results updates:

• Updated the section for 2026 to reflect ongoing progress, and clarified the "Resultados Parciais" to reference 2026 instead of 2025.
• Added placeholders for 2026 "Encontros" (meetings) in both semesters.

2025 detailed statistics:

• Broke down 2025 "Encontros" into first and second semesters, specifying student participation and mentorship statistics: 15 students in the first semester, 10 in the second, and 95 mentorship sessions totaling 66 hours for 45 students.
• Updated 2025 community metrics: 692 Discord members, 463 WhatsApp members, and over 7000 monthly site views.
• Removed outdated or redundant statistics and reorganized content for clarity.

[Copilot]

Pull request overview

This PR updates the project's timeline documentation to add a new 2026 section and provide more detailed statistics for 2025. The changes reorganize the content chronologically and enhance transparency by breaking down mentorship and community metrics into more granular data points.

Key changes:

• Added new 2026 section with placeholder structure for future updates
• Enhanced 2025 statistics with semester-specific breakdowns for student participation and detailed mentorship metrics
• Updated 2025 community metrics with current Discord, WhatsApp, and site traffic numbers

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[Copilot]

The 2026 "Encontros" section contains incomplete bullet points without any content after the colon. These placeholder entries should either be populated with planned information or removed to avoid displaying incomplete content to users.

Suggested change

	- **1º Semestre**:
	- **2º Semestre**:

[Copilot]

The 2026 "Comunidade" section contains an empty bullet point without any content. This incomplete entry should either be populated with community statistics for 2026 or removed to maintain documentation quality.

Suggested change

-

[Copilot]

There are two consecutive blank lines here. For consistency with the rest of the document (which uses single blank lines between sections, as seen in lines 22-23 and throughout the file), consider using only one blank line.

Suggested change

[Copilot]

There are two consecutive blank lines here. For consistency with the rest of the document structure, consider using only one blank line between sections.

Suggested change