Add 2025 nov edition stub (#796)

* Add 2025 autumn edition stub

* Revise details for 2025 Autumn Developer Summit

* Apply suggestion from @bsipocz

Co-authored-by: Brigitta Sipőcz <[email protected]>

* mv to nov

* nov

* Update content/summits/developer/2025-Nov/_index.md

Co-authored-by: Brigitta Sipőcz <[email protected]>

---------

Co-authored-by: Brigitta Sipőcz <[email protected]>

Author: MridulS

content/summits/developer/2025-Nov/_index.md

@@ -0,0 +1,167 @@
+---
+title: 2025 November Developer Summit
+subtitle: |
+  The Fourth Scientific Python Developer Summit
+  5-7 November 2025 – Copenhagen, Denmark
+summary: |
+  The fourth Scientific Python Developer Summit (5-7 November 2025) will be hosted in Copenhagen, Denmark. The summit will bring together participants, who will develop shared infrastructure for libraries in the Scientific Python ecosystem.
+authors:
+  ["Mridul Seth", "Brigitta Sipőcz", "Stéfan van der Walt", "K. Jarrod Millman"]
+date: 2025-09-07
+---
+
+## Sponsors
+
+We would like to thank the following institutions and projects for sponsoring this year's Summit.
+
+**Sponsors**
+
+_Thank you to European Spallation Source ERIC for providing staff and sponsoring us during the Summit._
+
+<p>&nbsp;</p>
+
+{{< image >}}
+src = 'https://upload.wikimedia.org/wikipedia/commons/c/c7/ESS_logotype_cyan_S.png'
+alt = 'ESS Logo'
+height = 120
+{{< /image >}}
+
+## During the event
+
+- [Worklog]()
+- [Pre-planning issues](https://github.com/scientific-python/summit-2025-nov/issues/)
+- [Discord channel]()
+- There is also a WhatsApp group for travel coordination
+
+## Agenda
+
+<style type="text/css">
+table {
+  margin-left: 0 !important;
+}
+</style>
+
+{{< details "**Tuesday**" >}}
+| Time | Description |
+|------|-------------|
+| | Arrive |
+| 18:30 | Informal group dinner |
+{{< /details >}}
+
+{{< details "**Wednesday**" >}}
+| Time | Description |
+|------|-------------|
+| 9:00--9:30 | Breakfast |
+| 9:00--9:30 | Welcome & coordination |
+| 9:30--13:00 | Work session |
+| 13:00--14:30 | Lunch & campus/coffee walks |
+| 14:30--17:30 | Work session |
+| 17:30--18:00 | Check-in / discussion |
+{{< /details >}}
+
+{{< details "**Thursday**" >}}
+| Time | Description |
+|------|-------------|
+| 9:00--9:30 | Breakfast |
+| 9:00--9:30 | Welcome & coordination |
+| 9:30--13:00 | Work session |
+| 13:00--14:30 | Lunch & campus/coffee walks |
+| 14:30--17:30 | Work session |
+| 17:30--18:00 | Check-in / discussion |
+{{< /details >}}
+
+{{< details "**Friday**" >}}
+| Time | Description |
+|------|-------------|
+| 9:00--9:30 | Breakfast |
+| 9:00--9:30 | Welcome & coordination |
+| 9:30--13:00 | Work session |
+| 13:00--14:30 | Lunch & campus/coffee walks |
+| 14:30--17:30 | Work session |
+| 17:30--18:00 | Check-in / discussion |
+{{< /details >}}
+
+{{< details "**Saturday**" >}}
+| Time | Description |
+|------|-------------|
+| | Depart |
+{{< /details >}}
+
+</div>
+
+The event is held at [Pioneer Centre for AI - KU](https://maps.app.goo.gl/LzAeD6L2Hw1BV2gUA)
+
+## Funding
+
+Unfortunately, this year we do not have any dedicated funding to cover participants travel and accommodation costs.
+
+Project maintainers, please reach out to your individual projects or employers to determine whether they have funds to sponsor your attendance.
+
+## Logistics
+
+We have space for 20-25 participants for three days.
+This will be an invite-only event that requires upfront agreement to:
+(a) take part in at least one pre-summit planning meeting,
+(b) collaborate with fellow participants on a work plan,
+(c) attend the summit in-person, and
+(d) participate, to whatever degree possible, in several months of post-summit implementation.
+
+### Airport to hotel
+
+...
+
+### Food
+
+...
+
+### Participants
+
+Participants are recruited from the community of developers of packages
+such as NumPy, SciPy, matplotlib, xarray, pandas, scikit-image, scikit-learn,
+NetworkX, and IPython, as well as domain stacks including Astropy, Pangeo, and
+scikit-HEP.
+
+{{< details "**List of confirmed participants**" >}}
+
+- ...
+
+{{< /details >}}
+
+## About
+
+### Work Topics
+
+The 2025 November Scientific Python Developer Summit will focus on work topics our participants express the most interest in. For comparison, these were the focus areas for the summit held in May, in Seattle:
+
+- **Data analysis**: statistics, optimization, sparse data, plotting, and dataframes.
+- **SPECS**: Community & governance SPECs, new SPECs, infrastructure & tools, etc.
+- **Tools**: CI, build, testing, cookie-cutter, new tools (https://tools.scientific-python.org), etc.
+- **Communications & teaching**: devstats, mystmd, lecture notes & learn
+- **Security**: supply chain, pull request review, tooling & infrastructure, web of trust
+
+### Dates
+
+The summit is held 5-7 November 2025 in Copenhagen, Denmark.
+
+Attendees should preferably arrive the day before the summit starts, and stay for the entire duration of the summit.
+
+### Pre-Summit Planning
+
+See [planning issues](https://github.com/scientific-python/summit-2025-nov/issues).
+
+Participants will be responsible for attending at least one video meetings and for participating in a planning repository via PRs, issues—as both contributors and reviewers.
+There is no heavy top-down structure: participants themselves will organize the work that needs to be done ahead of time.
+They will decide on topics, divide the work, and schedule the meeting.
+
+### Summit Execution
+
+The goal of the summit is to be a hands-on work meeting.
+That said, there will be some free time scheduled to brainstorm new ideas, and to discuss current community projects and activities.
+
+### Post-Summit Implementation
+
+After the meeting, attendees will collaborate on their assigned tasks until completion.
+
+## Meeting notes
+
+To be posted.