diff --git a/.all-contributorsrc b/.all-contributorsrc
index 201eb17157..37373bfb46 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -234,6 +234,33 @@
       "contributions": [
         "conference"
       ]
+    },
+    {
+      "login": "drnlm",
+      "name": "Neil Muller",
+      "avatar_url": "https://avatars.githubusercontent.com/u/642056?v=4",
+      "profile": "https://github.com/drnlm",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "mrswats",
+      "name": "Ferran Jovell",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3410779?v=4",
+      "profile": "https://github.com/mrswats",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "agriyakhetarpal",
+      "name": "Agriya Khetarpal",
+      "avatar_url": "https://avatars.githubusercontent.com/u/74401230?v=4",
+      "profile": "https://github.com/agriyakhetarpal",
+      "contributions": [
+        "conference"
+      ]
     }
   ],
   "repoType": "github"
diff --git a/.github/workflows/canonical-source-update.yml b/.github/workflows/canonical-source-update.yml
index 6ae3d71a80..68f8a0a138 100644
--- a/.github/workflows/canonical-source-update.yml
+++ b/.github/workflows/canonical-source-update.yml
@@ -117,9 +117,10 @@ jobs:
         run: |
           cp _data/conferences.yml /tmp/conferences_before.yml
           cp _data/archive.yml /tmp/archive_before.yml 2>/dev/null || true
+          cp _data/legacy.yml /tmp/legacy_before.yml 2>/dev/null || true
 
       - name: Setup Pixi
-        uses: prefix-dev/setup-pixi@v0.10.0
+        uses: prefix-dev/setup-pixi@v0.10.1
 
       - name: Run merge scripts
         id: merge
@@ -150,6 +151,15 @@ jobs:
           # Capture which source was processed for commit message
           echo "source_label=$SOURCE" >> $GITHUB_OUTPUT
 
+      - name: Verify no conference data loss
+        run: |
+          # An automated merge must never delete or rename existing conferences.
+          # This blocks e.g. two distinct conferences being fuzzy-matched into one
+          # (PyCon Africa vs PyCon South Africa) before anything is committed.
+          pixi run python ./utils/check_data_loss.py \
+            --before /tmp/conferences_before.yml /tmp/archive_before.yml /tmp/legacy_before.yml \
+            --after _data/conferences.yml _data/archive.yml _data/legacy.yml
+
       - name: Check for changes
         id: check_changes
         run: |
diff --git a/.github/workflows/check-conference-update.yml b/.github/workflows/check-conference-update.yml
index 303805b156..9db3888c77 100644
--- a/.github/workflows/check-conference-update.yml
+++ b/.github/workflows/check-conference-update.yml
@@ -913,7 +913,7 @@ jobs:
         run: echo "GITHUB_ACTOR=${{ github.repository_owner }}" >> "$GITHUB_ENV"
 
       - name: Run Claude Code Analysis
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@v1.0.191
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_bots: 'github-actions[bot]'
@@ -953,7 +953,7 @@ jobs:
 
       - name: Setup Pixi
         if: steps.check_changes.outputs.changed == 'true'
-        uses: prefix-dev/setup-pixi@v0.10.0
+        uses: prefix-dev/setup-pixi@v0.10.1
 
       - name: Sort conferences
         if: steps.check_changes.outputs.changed == 'true'
@@ -1178,7 +1178,7 @@ jobs:
         run: echo "GITHUB_ACTOR=${{ github.repository_owner }}" >> "$GITHUB_ENV"
 
       - name: Run Claude Code Analysis
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@v1.0.191
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_bots: 'github-actions[bot]'
@@ -1216,7 +1216,7 @@ jobs:
 
       - name: Setup Pixi
         if: steps.check_changes.outputs.changed == 'true'
-        uses: prefix-dev/setup-pixi@v0.10.0
+        uses: prefix-dev/setup-pixi@v0.10.1
 
       - name: Sort conferences
         if: steps.check_changes.outputs.changed == 'true'
diff --git a/.github/workflows/ci-core.yml b/.github/workflows/ci-core.yml
index 334ad88075..c905bee74a 100644
--- a/.github/workflows/ci-core.yml
+++ b/.github/workflows/ci-core.yml
@@ -25,7 +25,7 @@ jobs:
       uses: actions/checkout@v7
 
     - name: 🐍 Setup Pixi
-      uses: prefix-dev/setup-pixi@v0.10.0
+      uses: prefix-dev/setup-pixi@v0.10.1
 
     - name: ✅ Validate conference data structure
       run: |
@@ -56,7 +56,7 @@ jobs:
       uses: actions/checkout@v7
 
     - name: 🐍 Setup Pixi
-      uses: prefix-dev/setup-pixi@v0.10.0
+      uses: prefix-dev/setup-pixi@v0.10.1
 
     - name: 🧪 Run Python tests
       run: |
@@ -77,7 +77,7 @@ jobs:
       uses: actions/checkout@v7
 
     - name: 🐍 Setup Pixi
-      uses: prefix-dev/setup-pixi@v0.10.0
+      uses: prefix-dev/setup-pixi@v0.10.1
 
     - name: 🔍 Run pre-commit hooks
       run: |
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 70eea9e00b..3e133c89df 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -24,8 +24,8 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4
+      uses: github/codeql-action/init@v4.37.6
       with:
         languages: python
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4
+      uses: github/codeql-action/analyze@v4.37.6
diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 5fa13d1eda..e90aae25ac 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -74,7 +74,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'
@@ -168,7 +168,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'
@@ -253,7 +253,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'
@@ -307,7 +307,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
 
diff --git a/.github/workflows/enrich-tba-conferences.yml b/.github/workflows/enrich-tba-conferences.yml
index e14c1ecaaf..4725c5e135 100644
--- a/.github/workflows/enrich-tba-conferences.yml
+++ b/.github/workflows/enrich-tba-conferences.yml
@@ -105,7 +105,7 @@ jobs:
           cp _data/conferences.yml /tmp/conferences_before.yml
 
       - name: Setup Pixi
-        uses: prefix-dev/setup-pixi@v0.10.0
+        uses: prefix-dev/setup-pixi@v0.10.1
 
       - name: Install lynx for text extraction
         run: sudo apt-get install -qq -y lynx > /dev/null 2>&1 || true
diff --git a/.github/workflows/frontend-tests.yml b/.github/workflows/frontend-tests.yml
index 5c0d633735..b5dfedd0b1 100644
--- a/.github/workflows/frontend-tests.yml
+++ b/.github/workflows/frontend-tests.yml
@@ -43,7 +43,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'
@@ -160,7 +160,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'
@@ -185,7 +185,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: '20'
           cache: 'npm'
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 16dbac1afa..593821d10d 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -9,4 +9,4 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/labeler@v6
+    - uses: actions/labeler@v7
diff --git a/.github/workflows/pr-sort.yml b/.github/workflows/pr-sort.yml
index d094be6372..266f1b2989 100644
--- a/.github/workflows/pr-sort.yml
+++ b/.github/workflows/pr-sort.yml
@@ -38,7 +38,7 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Setup Pixi
-      uses: prefix-dev/setup-pixi@v0.10.0
+      uses: prefix-dev/setup-pixi@v0.10.1
 
     - name: Set variables
       id: vars
diff --git a/.github/workflows/recurring-sort.yml b/.github/workflows/recurring-sort.yml
index 5aa55d7ba8..22a7ce76e4 100644
--- a/.github/workflows/recurring-sort.yml
+++ b/.github/workflows/recurring-sort.yml
@@ -21,7 +21,7 @@ jobs:
       uses: actions/checkout@v7
 
     - name: Setup Pixi
-      uses: prefix-dev/setup-pixi@v0.10.0
+      uses: prefix-dev/setup-pixi@v0.10.1
 
     - name: Run links command
       run: pixi run sort
diff --git a/.github/workflows/sync-changedetection.yaml b/.github/workflows/sync-changedetection.yaml
index b6912e8265..1e93ddac5c 100644
--- a/.github/workflows/sync-changedetection.yaml
+++ b/.github/workflows/sync-changedetection.yaml
@@ -32,7 +32,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: '3.12'
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ff2a10b3b4..306a1422d4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -209,6 +209,9 @@ Example:
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jungmir"><img src="https://avatars.githubusercontent.com/u/61821253?v=4?s=100" width="100px;" alt="jungmir"/><br /><sub><b>jungmir</b></sub></a><br /><a href="#conference-jungmir" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/drnlm"><img src="https://avatars.githubusercontent.com/u/642056?v=4?s=100" width="100px;" alt="Neil Muller"/><br /><sub><b>Neil Muller</b></sub></a><br /><a href="#conference-drnlm" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/mrswats"><img src="https://avatars.githubusercontent.com/u/3410779?v=4?s=100" width="100px;" alt="Ferran Jovell"/><br /><sub><b>Ferran Jovell</b></sub></a><br /><a href="#conference-mrswats" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/agriyakhetarpal"><img src="https://avatars.githubusercontent.com/u/74401230?v=4?s=100" width="100px;" alt="Agriya Khetarpal"/><br /><sub><b>Agriya Khetarpal</b></sub></a><br /><a href="#conference-agriyakhetarpal" title="Python conference (Added or updated)">📆</a></td>
     </tr>
   </tbody>
 </table>
diff --git a/README.md b/README.md
index e33ea476ce..e57764ec4b 100644
--- a/README.md
+++ b/README.md
@@ -266,6 +266,9 @@ If you'd like to add support for a new language, please open an issue.
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jungmir"><img src="https://avatars.githubusercontent.com/u/61821253?v=4?s=100" width="100px;" alt="jungmir"/><br /><sub><b>jungmir</b></sub></a><br /><a href="#conference-jungmir" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/drnlm"><img src="https://avatars.githubusercontent.com/u/642056?v=4?s=100" width="100px;" alt="Neil Muller"/><br /><sub><b>Neil Muller</b></sub></a><br /><a href="#conference-drnlm" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/mrswats"><img src="https://avatars.githubusercontent.com/u/3410779?v=4?s=100" width="100px;" alt="Ferran Jovell"/><br /><sub><b>Ferran Jovell</b></sub></a><br /><a href="#conference-mrswats" title="Python conference (Added or updated)">📆</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/agriyakhetarpal"><img src="https://avatars.githubusercontent.com/u/74401230?v=4?s=100" width="100px;" alt="Agriya Khetarpal"/><br /><sub><b>Agriya Khetarpal</b></sub></a><br /><a href="#conference-agriyakhetarpal" title="Python conference (Added or updated)">📆</a></td>
     </tr>
   </tbody>
 </table>
diff --git a/_data/archive.yml b/_data/archive.yml
index ec509fa9b2..fcc348b2b9 100644
--- a/_data/archive.yml
+++ b/_data/archive.yml
@@ -1,5 +1,81 @@
 ---
 
+- conference: Python Norte
+  year: 2026
+  link: https://pythonnorte.org/
+  cfp: TBA
+  timezone: America/Sao_Paulo
+  place: Ananindeua, Brazil
+  start: 2026-07-03
+  end: 2026-07-05
+  sub: PY
+  location:
+  - title: Python Norte 2026
+    latitude: -1.374035
+    longitude: -48.4016623
+
+- conference: Web Summer Camp
+  year: 2026
+  link: https://websummercamp.com/
+  cfp_link: https://sessionize.com/web-summer-camp-2026/
+  cfp: '2026-02-28 23:59:59'
+  place: Opatija, Croatia
+  start: 2026-07-02
+  end: 2026-07-04
+  sub: WEB
+  location:
+  - title: Web Summer Camp 2026
+    latitude: 45.3349238
+    longitude: 14.3067834
+
+- conference: PyCon Singapore
+  year: 2026
+  link: http://pycon.sg/
+  cfp: TBA
+  place: Singapore, Singapore
+  start: 2026-06-19
+  end: 2026-06-21
+  sponsor: http://pycon.sg/index.html#sponsors
+  sub: PY
+  location:
+  - title: PyCon Singapore 2026
+    latitude: 1.2899175
+    longitude: 103.8519072
+
+- conference: GeoPython
+  year: 2026
+  link: https://2026.geopython.net/
+  cfp_link: https://submit.geopython.net/geopython-2026/cfp
+  cfp: '2026-02-15 23:59:00'
+  cfp_ext: '2026-03-31 23:59:00'
+  tutorial_deadline: '2026-03-31 23:59:00'
+  place: Basel, Switzerland
+  start: 2026-06-08
+  end: 2026-06-10
+  sponsor: https://2026.geopython.net/app/sponsors
+  finaid: https://2026.geopython.net/app/finaid
+  sub: GEO
+  location:
+  - title: GeoPython 2026
+    latitude: 47.3615882
+    longitude: 7.354445
+
+- conference: PyData London
+  year: 2026
+  link: https://pydata.org/london2026
+  cfp_link: https://pydata.org/london2026/cfp#submit
+  cfp: '2026-02-16 23:59:00'
+  timezone: Europe/London
+  place: London, UK
+  start: 2026-06-05
+  end: 2026-06-07
+  sponsor: https://pydata.org/london2026/sponsor
+  sub: DATA
+  location:
+  - title: PyData London 2025
+    latitude: 51.5074456
+    longitude: -0.1277653
+
 - conference: PyCon Italy
   alt_name: PyCon Italia
   year: 2026
@@ -10,7 +86,6 @@
   start: 2026-05-27
   end: 2026-05-30
   sponsor: https://2026.pycon.it/sponsor/
-  finaid: https://2026.pycon.it/en
   mastodon: https://social.python.it/@pycon
   sub: PY
   location:
@@ -49,6 +124,35 @@
     latitude: 52.2319581
     longitude: 21.0067249
 
+- conference: PyGrunn
+  year: 2026
+  link: https://pygrunn.org/
+  cfp_link: https://forms.gle/5qAYUczPptmGVCY58
+  cfp: TBA
+  place: Groningen, Netherlands
+  start: 2026-05-08
+  end: 2026-05-08
+  sub: PY
+  location:
+  - title: PyGrunn 2026
+    latitude: 53.2190652
+    longitude: 6.5680077
+
+- conference: Python Sul
+  alt_name: Python Sul (Brazil)
+  year: 2026
+  link: https://sul.python.org.br/
+  cfp: TBA
+  timezone: America/Sao_Paulo
+  place: Londrina, Brazil
+  start: 2026-05-01
+  end: 2026-05-03
+  sub: PY
+  location:
+  - title: Python Sul 2026
+    latitude: -23.4761271
+    longitude: -51.1179013
+
 - conference: North Bay Python
   year: 2026
   link: https://northbaypython.org/
@@ -126,7 +230,6 @@
   start: 2026-04-14
   end: 2026-04-17
   sponsor: https://2026.pycon.de/sponsoring/
-  finaid: https://2026.pycon.de/
   sub: PY,DATA
   location:
   - title: PyCon Germany & PyData Conference 2026
@@ -262,6 +365,19 @@
     latitude: -22.611456150000002
     longitude: 17.05860104184979
 
+- conference: Pytorch Day
+  year: 2026
+  link: https://events.linuxfoundation.org/pytorch-day-india/
+  cfp: TBA
+  place: Bengaluru, India
+  start: 2026-02-07
+  end: 2026-02-07
+  sub: DATA,DAY
+  location:
+  - title: Pytorch Day 2026
+    latitude: 12.9767936
+    longitude: 77.590082
+
 - conference: FOSDEM
   year: 2026
   link: https://fosdem.org/2026/
diff --git a/_data/conferences.yml b/_data/conferences.yml
index d9eb385056..79a78caaf2 100644
--- a/_data/conferences.yml
+++ b/_data/conferences.yml
@@ -1,5 +1,19 @@
 ---
 
+- conference: PyCon Lithuania
+  year: 2027
+  link: https://pycon.lt/2027/
+  cfp_link: https://pycon.lt/2027/cfp
+  cfp: '2027-01-13 23:59:00'
+  place: Vilnius, Lithuania
+  start: 2027-04-28
+  end: 2027-04-30
+  sub: PY
+  location:
+  - title: PyCon Lithuania 2027
+    latitude: 54.6870458
+    longitude: 25.2829111
+
 - conference: PyCon Wroclaw
   year: 2026
   link: https://www.pyconwroclaw.com/
@@ -18,6 +32,50 @@
     latitude: 51.1089776
     longitude: 17.0326689
 
+- conference: PyCon Namibia
+  year: 2027
+  link: https://na.pycon.org/
+  cfp: '2026-09-21 01:59:00'
+  timezone: Africa/Windhoek
+  place: Windhoek, Namibia
+  start: 2027-02-19
+  end: 2027-02-25
+  mastodon: https://hachyderm.io/@PyConNA
+  bluesky: https://bsky.app/profile/pyconna.bsky.social
+  sub: PY
+  location:
+  - title: PyCon Namibia 2027
+    latitude: -22.5597
+    longitude: 17.0832
+
+- conference: Wagtail Space
+  year: 2026
+  link: https://wagtail.org/wagtail-space-2026/
+  cfp_link: https://pretalx.com/wagtail-space-2026/cfp
+  cfp: '2026-09-11 23:59:00'
+  timezone: UTC
+  place: Online
+  start: 2026-11-18
+  end: 2026-11-20
+  sub: WEB
+
+- conference: Python Pizza Istanbul
+  alt_name: Istanbul Python Pizza
+  year: 2026
+  link: https://istanbul.python.pizza/
+  cfp_link: https://istanbul.python.pizza/cfp/
+  cfp: '2026-08-25 23:59:00'
+  place: Istanbul, Turkey
+  start: 2026-11-14
+  end: 2026-11-14
+  sponsor: https://istanbul.python.pizza/sponsors/
+  twitter: pythonpizzaist
+  sub: PY
+  location:
+  - title: Python Pizza Istanbul 2026
+    latitude: 41.1088
+    longitude: 29.0176
+
 - conference: PyCon Netherlands
   alt_name: PyCon NL
   year: 2026
@@ -52,10 +110,45 @@
     latitude: 50.0478
     longitude: 12.5604627
 
+- conference: PyHEP.dev
+  alt_name: PyHEP
+  year: 2026
+  link: https://indico.nikhef.nl/event/7873/
+  cfp: '2026-08-14 23:59:00'
+  timezone: Europe/Amsterdam
+  place: Amsterdam, Netherlands
+  start: 2026-09-07
+  end: 2026-09-09
+  sub: SCIPY
+  location:
+  - title: PyHEP.dev 2026
+    latitude: 52.4111289
+    longitude: 4.877231604293446
+
+- conference: PyCon South Africa
+  alt_name: PyCon ZA
+  year: 2026
+  link: https://za.pycon.org/
+  cfp_link: https://za.pycon.org/pages/speaking/how_to_apply/
+  cfp: '2026-08-14 23:59:00'
+  tutorial_deadline: '2026-08-14 23:59:00'
+  timezone: Africa/Johannesburg
+  place: Rondebosch, South Africa
+  start: 2026-10-14
+  end: 2026-10-18
+  twitter: PyConZA
+  mastodon: https://fosstodon.org/@PyConZA
+  sub: PY
+  location:
+  - title: PyCon South Africa 2026
+    latitude: -33.959834
+    longitude: 18.473872
+
 - conference: PyData Global
   year: 2026
   link: https://pydata.org/global2026/
   cfp: '2026-08-03 23:59:00'
+  cfp_ext: '2026-08-24 23:59:00'
   workshop_deadline: '2026-08-03 23:59:00'
   tutorial_deadline: '2026-08-03 23:59:00'
   place: Online
@@ -105,6 +198,7 @@
   link: https://2026.pycon.ie/
   cfp_link: https://sessionize.com/pycon-ireland-2026/
   cfp: '2026-07-31 23:59:00'
+  cfp_ext: '2026-08-30 23:59:00'
   place: Dublin, Ireland
   start: 2026-10-17
   end: 2026-10-17
@@ -133,7 +227,6 @@
 - conference: PyCon Hong Kong
   year: 2026
   link: https://www.pycon.hk/
-  cfp_link: https://www.pycon.hk/
   cfp: '2026-06-20 23:59:59'
   timezone: Asia/Hong_Kong
   place: Hong Kong, China
@@ -148,6 +241,7 @@
     longitude: 114.1628131
 
 - conference: Python Nordeste
+  alt_name: PyNE
   year: 2026
   link: https://pythonnordeste.org/
   cfp: '2026-06-19 23:59:00'
@@ -242,6 +336,22 @@
     latitude: 5.5571096
     longitude: -0.2012376
 
+- conference: PyCon Taiwan
+  alt_name: PyCon TW
+  year: 2026
+  link: https://tw.pycon.org/2026/
+  cfp_link: https://tw.pycon.org/2026/en-us/speaking/cfp
+  cfp: '2026-06-01 23:59:59'
+  place: Taipei, Taiwan
+  start: 2026-10-17
+  end: 2026-10-18
+  sponsor: https://tw.pycon.org/2026/en-us/sponsor
+  sub: PY
+  location:
+  - title: PyCon Taiwan 2026
+    latitude: 25.033
+    longitude: 121.5654
+
 - conference: PyCon Togo
   year: 2026
   link: https://pycontg.pytogo.org/
@@ -266,6 +376,7 @@
   place: Hiroshima, Japan
   start: 2026-08-21
   end: 2026-08-22
+  sponsor: https://2026.pycon.jp/en/sponsors
   sub: PY
   location:
   - title: PyCon Japan 2026
@@ -323,6 +434,24 @@
     latitude: -27.5953778
     longitude: -48.5480367
 
+- conference: PyCon Spain
+  year: 2026
+  link: https://2026.es.pycon.org/en/
+  cfp_link: https://pretalx.com/pycones-2026/
+  cfp: '2026-05-17 23:59:00'
+  timezone: Europe/Madrid
+  place: Barcelona, Spain
+  start: 2026-11-06
+  end: 2026-11-08
+  sponsor: https://2026.es.pycon.org/en/sponsors/#about
+  finaid: https://2026.es.pycon.org/en/becas
+  bluesky: https://bsky.app/profile/es.pycon.org
+  sub: PY
+  location:
+  - title: PyCon Spain 2026
+    latitude: 41.3866666
+    longitude: 2.1636166
+
 - conference: PyCon Russia
   year: 2026
   link: https://www.pycon.ru/
@@ -348,7 +477,6 @@
   place: Athens, Greece
   start: 2026-10-12
   end: 2026-10-13
-  finaid: https://pycon.gr/
   youtube: https://www.youtube.com/@pycongreece
   sub: PY
   location:
@@ -375,22 +503,6 @@
     latitude: 37.5580558199932
     longitude: 126.998311394625
 
-- conference: PyCon Spain
-  year: 2026
-  link: https://2026.es.pycon.org/en/
-  cfp: '2026-05-03 23:59:00'
-  timezone: Europe/Madrid
-  place: Barcelona, Spain
-  start: 2026-11-06
-  end: 2026-11-08
-  sponsor: https://2026.es.pycon.org/es/sponsors/
-  bluesky: https://bsky.app/profile/es.pycon.org
-  sub: PY
-  location:
-  - title: PyCon Spain 2026
-    latitude: 41.3828939
-    longitude: 2.1774322
-
 - conference: PyCon Latin America
   alt_name: PyCon LatAm
   year: 2026
@@ -557,35 +669,6 @@
     latitude: 41.8755616
     longitude: -87.6244212
 
-- conference: Web Summer Camp
-  year: 2026
-  link: https://websummercamp.com/
-  cfp_link: https://sessionize.com/web-summer-camp-2026/
-  cfp: '2026-02-28 23:59:59'
-  place: Opatija, Croatia
-  start: 2026-07-02
-  end: 2026-07-04
-  sub: WEB
-  location:
-  - title: Web Summer Camp 2026
-    latitude: 45.3349238
-    longitude: 14.3067834
-
-- conference: PyCon Estonia
-  alt_name: PyCon EE
-  year: 2026
-  link: https://pycon.ee/
-  cfp_link: https://docs.google.com/forms/d/e/1FAIpQLSewbFKG6BEsGXR9ilgsW1wqfmzRR0Pf9XDO5WXTFhrcgrrN3g/viewform
-  cfp: '2026-02-28 23:59:00'
-  place: Tallinn, Estonia
-  start: 2026-10-08
-  end: 2026-10-09
-  sub: PY
-  location:
-  - title: PyCon Estonia 2026
-    latitude: 59.4372155
-    longitude: 24.7453688
-
 - conference: SciPy US
   alt_name: SciPy
   year: 2026
@@ -607,40 +690,6 @@
     latitude: 44.9772995
     longitude: -93.2654692
 
-- conference: PyData London
-  year: 2026
-  link: https://pydata.org/london2026
-  cfp_link: https://pydata.org/london2026/cfp#submit
-  cfp: '2026-02-16 23:59:00'
-  timezone: Europe/London
-  place: London, UK
-  start: 2026-06-05
-  end: 2026-06-07
-  sponsor: https://pydata.org/london2026/sponsor
-  sub: DATA
-  location:
-  - title: PyData London 2025
-    latitude: 51.5074456
-    longitude: -0.1277653
-
-- conference: GeoPython
-  year: 2026
-  link: https://2026.geopython.net/
-  cfp_link: https://submit.geopython.net/geopython-2026/cfp
-  cfp: '2026-02-15 23:59:00'
-  cfp_ext: '2026-03-31 23:59:00'
-  tutorial_deadline: '2026-03-31 23:59:00'
-  place: Basel, Switzerland
-  start: 2026-06-08
-  end: 2026-06-10
-  sponsor: https://2026.geopython.net/app/sponsors
-  finaid: https://2026.geopython.net/app/finaid
-  sub: GEO
-  location:
-  - title: GeoPython 2026
-    latitude: 47.3615882
-    longitude: 7.354445
-
 - conference: EuroPython
   year: 2026
   link: https://ep2026.europython.eu/
@@ -694,6 +743,24 @@
     latitude: 50.061389
     longitude: 19.938333
 
+- conference: PyCon Sweden
+  year: 2026
+  link: https://pycon.se/
+  cfp_link: https://pretalx.com/pycon-sweden-2026/
+  cfp: '2025-08-23 23:59:00'
+  timezone: Europe/Stockholm
+  place: Stockholm, Sweden
+  start: 2026-11-19
+  end: 2026-11-20
+  sponsor: https://pycon.se/#sponsorship
+  mastodon: https://unsplash.com/@micaelwidell?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText
+  youtube: https://www.youtube.com/c/PyConSweden
+  sub: PY
+  location:
+  - title: PyCon Sweden 2026
+    latitude: 59.3251172
+    longitude: 18.0710935
+
 - conference: PyCon Austria
   year: 2027
   link: https://pycon.at/
@@ -713,34 +780,37 @@
   alt_name: PyCon Germany
   year: 2027
   link: https://2027.pycon.de/
-  cfp_link: https://2027.pycon.de/
   cfp: TBA
   timezone: Europe/Berlin
   place: Heidelberg, Germany
   start: 2027-04-20
   end: 2027-04-22
-  sponsor: https://2027.pycon.de/
+  sponsor: https://2027.pycon.de/sponsoring/
+  mastodon: https://fosstodon.org/@pyconde
   sub: PY,DATA
   location:
   - title: PyCon Germany & PyData Conference 2027
     latitude: 49.4093582
     longitude: 8.694724
 
-- conference: PyCon Namibia
-  year: 2027
-  link: https://na.pycon.org/
-  cfp: TBA
-  timezone: Africa/Johannesburg
-  place: Windhoek, Namibia
-  start: 2027-02-19
-  end: 2027-02-25
-  mastodon: https://hachyderm.io/@PyConNA
-  bluesky: https://bsky.app/profile/pyconna.bsky.social
-  sub: PY
+- conference: SciPy India
+  year: 2026
+  link: https://scipy.in/2026/
+  cfp: '2026-10-19 23:59:00'
+  cfp_link: https://cfp.scipy.in/scipy-india-2026/cfp
+  timezone: Asia/Kolkata
+  place: Chennai, India
+  start: 2026-12-19
+  end: 2026-12-20
+  sponsor: https://scipy.in/2026/sponsor.html
+  mastodon: https://fosstodon.org/@scipyindia
+  bluesky: https://bsky.app/profile/scipy.in
+  youtube: https://www.youtube.com/@scipy-india
+  sub: SCIPY
   location:
-  - title: PyCon Namibia 2027
-    latitude: -22.5597
-    longitude: 17.0832
+  - title: SciPy India 2026
+    latitude: 12.9917014
+    longitude: 80.2295271
 
 - conference: Python E-Commerce Forum
   year: 2026
@@ -755,22 +825,6 @@
     latitude: 55.9533456
     longitude: -3.1883749
 
-- conference: PyCon Sweden
-  year: 2026
-  link: https://pycon.se/
-  cfp: TBA
-  place: Stockholm, Sweden
-  start: 2026-11-19
-  end: 2026-11-20
-  sponsor: https://pycon.se/#sponsorship
-  mastodon: https://unsplash.com/@micaelwidell?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText
-  youtube: https://www.youtube.com/c/PyConSweden
-  sub: PY
-  location:
-  - title: PyCon Sweden 2026
-    latitude: 59.3251172
-    longitude: 18.0710935
-
 - conference: XtremePython
   year: 2026
   link: https://xtremepython.dev/
@@ -780,6 +834,20 @@
   end: 2026-11-17
   sub: PY
 
+- conference: PyCon Tanzania
+  alt_name: Python Tanzania Conference
+  year: 2026
+  link: https://pycon.or.tz/
+  cfp: TBA
+  place: Dar Es Salaam, Tanzania
+  start: 2026-11-14
+  end: 2026-11-16
+  sub: PY
+  location:
+  - title: PyCon Tanzania 2026
+    latitude: -6.8160837
+    longitude: 39.2803583
+
 - conference: FastAPI Conference
   year: 2026
   link: https://fastapiconf.com/
@@ -793,6 +861,36 @@
     latitude: 52.3730796
     longitude: 4.8924534
 
+- conference: PyCon Panamá
+  year: 2026
+  link: https://pycon.pa/2026/
+  cfp: TBA
+  place: Panama City, Panamá
+  start: 2026-10-22
+  end: 2026-10-23
+  sub: PY
+  location:
+  - title: PyCon Panamá 2026
+    latitude: 8.9714493
+    longitude: -79.5341802
+
+- conference: PyCon Estonia
+  alt_name: PyCon EE
+  year: 2026
+  link: https://pycon.ee/
+  cfp_link: https://docs.google.com/forms/d/e/1FAIpQLSewbFKG6BEsGXR9ilgsW1wqfmzRR0Pf9XDO5WXTFhrcgrrN3g/viewform
+  cfp: Cancelled
+  cfp_ext: '2026-02-28 23:59:00'
+  place: Tallinn, Estonia
+  start: 2026-10-08
+  end: 2026-10-09
+  sponsor: https://pycon.ee/#sponsors
+  sub: PY
+  location:
+  - title: PyCon Estonia 2026
+    latitude: 59.4372155
+    longitude: 24.7453688
+
 - conference: EARL
   year: 2026
   link: https://earl-conference.com/
@@ -813,6 +911,7 @@
   year: 2026
   link: https://barcamps.eu/pythoncamp-ruegen-2026/
   cfp: TBA
+  timezone: Europe/Berlin
   place: Rügen, Germany
   start: 2026-09-26
   end: 2026-09-27
@@ -841,6 +940,7 @@
   year: 2026
   link: https://barcamps.eu/python-barcamp-leipzig-2026/
   cfp: TBA
+  timezone: Europe/Berlin
   place: Leipzig, Germany
   start: 2026-08-01
   end: 2026-08-02
@@ -865,31 +965,3 @@
   - title: PyData PyCon Armenia 2026
     latitude: 40.1777112
     longitude: 44.5126233
-
-- conference: Python Norte
-  year: 2026
-  link: https://pythonnorte.org/
-  cfp: TBA
-  timezone: America/Sao_Paulo
-  place: Ananindeua, Brazil
-  start: 2026-07-03
-  end: 2026-07-05
-  sub: PY
-  location:
-  - title: Python Norte 2026
-    latitude: -1.374035
-    longitude: -48.4016623
-
-- conference: PyCon Singapore
-  year: 2026
-  link: http://pycon.sg/
-  cfp: TBA
-  place: Singapore, Singapore
-  start: 2026-06-19
-  end: 2026-06-21
-  sponsor: http://pycon.sg/index.html#sponsors
-  sub: PY
-  location:
-  - title: PyCon Singapore 2026
-    latitude: 1.2899175
-    longitude: 103.8519072
diff --git a/package-lock.json b/package-lock.json
index 0c5b1c15e6..1d4b54c68f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1393,10 +1393,11 @@
       "dev": true
     },
     "node_modules/brace-expansion": {
-      "version": "1.1.12",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
-      "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
+      "version": "1.1.18",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.18.tgz",
+      "integrity": "sha512-Edep/X9fGqVNmzKBVsDYIOtD+z1tuezV70LBjdCst9Tqu76lsnvRiZ6oTic1n+/BIwX6QDGAO94PN4N2SADvtw==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
diff --git a/tests/test_fuzzy_match.py b/tests/test_fuzzy_match.py
index f7b11ea2fd..4216a4512c 100644
--- a/tests/test_fuzzy_match.py
+++ b/tests/test_fuzzy_match.py
@@ -495,6 +495,115 @@ def test_below_90_percent_no_prompt(self, mock_title_mappings):
         assert len(remote) >= 1
 
 
+class TestSubsetNameCollision:
+    """Regression tests for distinct conferences whose names score 100.
+
+    token_set_ratio returns 100 when one name's tokens are a subset of the
+    other's (e.g. "PyCon Africa" vs "PyCon South Africa"). Such pairs must
+    never be auto-merged as "exact" matches - that previously renamed
+    PyCon South Africa to PyCon Africa and deleted the real PyCon Africa
+    entry (commit d76e737).
+    """
+
+    @staticmethod
+    def _africa_yaml(include_africa: bool) -> pd.DataFrame:
+        rows = {
+            "conference": ["PyCon South Africa"],
+            "year": [2026],
+            "cfp": ["2026-06-01 23:59:00"],
+            "link": ["https://za.pycon.org/"],
+            "place": ["Rondebosch, South Africa"],
+            "start": ["2026-10-14"],
+            "end": ["2026-10-18"],
+        }
+        df = pd.DataFrame(rows)
+        if include_africa:
+            africa = pd.DataFrame(
+                {
+                    "conference": ["PyCon Africa"],
+                    "year": [2026],
+                    "cfp": ["2026-04-16 23:59:00"],
+                    "link": ["https://africa.pycon.org/"],
+                    "place": ["Kampala, Uganda"],
+                    "start": ["2026-10-07"],
+                    "end": ["2026-10-11"],
+                },
+            )
+            df = pd.concat([df, africa], ignore_index=True)
+        return df
+
+    @staticmethod
+    def _africa_remote() -> pd.DataFrame:
+        return pd.DataFrame(
+            {
+                "conference": ["PyCon Africa"],
+                "year": [2026],
+                "cfp": [""],
+                "link": ["https://africa.pycon.org/"],
+                "place": ["Kampala, Uganda"],
+                "start": ["2026-10-07"],
+                "end": ["2026-10-11"],
+                "sponsor": ["https://africa.pycon.org/2026/sponsor-us/"],
+            },
+        )
+
+    def test_subset_name_is_not_an_exact_match(self, mock_title_mappings):
+        """A token-subset name pair must not auto-merge without confirmation.
+
+        Contract: "PyCon South Africa" vs "PyCon Africa" scores 100 via
+        token_set_ratio, but the names are not identical, so it must go
+        through the fuzzy confirmation path (which defaults to "no" in CI).
+        """
+        df_yml = self._africa_yaml(include_africa=False)
+        df_remote = self._africa_remote()
+
+        # Non-interactive / user rejects: conferences stay separate
+        with patch("builtins.input", return_value="n"):
+            result, _remote, _report = fuzzy_match(df_yml, df_remote)
+
+        conf_list = result["conference"].tolist()
+        assert "PyCon South Africa" in conf_list, f"PyCon South Africa was renamed/merged away: {conf_list}"
+
+        za_row = result[result["conference"] == "PyCon South Africa"].iloc[0]
+        assert za_row["link"] == "https://za.pycon.org/"
+        assert za_row["start"] == "2026-10-14"
+
+    def test_both_africa_conferences_survive_merge(self, mock_title_mappings):
+        """Reproduce the d76e737 incident: both conferences must survive.
+
+        YAML has PyCon Africa (Kampala) and PyCon South Africa (Rondebosch);
+        the remote CSV has only PyCon Africa. The remote row belongs to its
+        identically-named YAML entry - PyCon South Africa must be left
+        completely alone, without prompting.
+        """
+        df_yml = self._africa_yaml(include_africa=True)
+        df_remote = self._africa_remote()
+
+        with patch(
+            "builtins.input",
+            side_effect=AssertionError("Should not prompt: remote row belongs to identical YAML entry"),
+        ):
+            result, _remote, _report = fuzzy_match(df_yml, df_remote)
+
+        conf_list = result["conference"].tolist()
+        assert "PyCon Africa" in conf_list, f"PyCon Africa was lost: {conf_list}"
+        assert "PyCon South Africa" in conf_list, f"PyCon South Africa was lost: {conf_list}"
+
+        za_row = result[result["conference"] == "PyCon South Africa"].iloc[0]
+        assert za_row["link"] == "https://za.pycon.org/"
+        assert za_row["place"] == "Rondebosch, South Africa"
+        assert za_row["start"] == "2026-10-14"
+        assert pd.isna(za_row.get("sponsor")) or za_row.get("sponsor") in (
+            "",
+            None,
+        ), "PyCon South Africa must not inherit PyCon Africa's sponsor link"
+
+        africa_row = result[result["conference"] == "PyCon Africa"].iloc[0]
+        assert africa_row["place"] == "Kampala, Uganda"
+        assert africa_row["start"] == "2026-10-07"
+        assert africa_row["sponsor"] == "https://africa.pycon.org/2026/sponsor-us/"
+
+
 class TestDataPreservation:
     """Test that original data is preserved through fuzzy matching."""
 
diff --git a/tests/test_redundant_links.py b/tests/test_redundant_links.py
new file mode 100644
index 0000000000..d47d7af1b8
--- /dev/null
+++ b/tests/test_redundant_links.py
@@ -0,0 +1,122 @@
+"""Tests for dropping sub-page link fields that just repeat the homepage.
+
+Upstream sources sometimes fill every URL column with the conference
+homepage (e.g. python-organizers' Proposal URL). A cfp_link/sponsor/finaid
+identical to the main link carries no information and must be dropped
+during sanitation - but a different path, subdomain, query, or #anchor is a
+different pointer and must survive.
+"""
+
+import sys
+from pathlib import Path
+
+sys.path.append(str(Path(__file__).parent.parent / "utils"))
+
+from tidy_conf.links import drop_redundant_link_fields
+from tidy_conf.links import normalize_url_pointer
+
+
+class TestNormalizeUrlPointer:
+    """Test URL normalization for same-pointer comparison."""
+
+    def test_scheme_ignored(self):
+        assert normalize_url_pointer("http://pycon.de/") == normalize_url_pointer("https://pycon.de/")
+
+    def test_www_prefix_ignored(self):
+        assert normalize_url_pointer("https://www.pycon.de/") == normalize_url_pointer("https://pycon.de/")
+
+    def test_trailing_slash_ignored(self):
+        assert normalize_url_pointer("https://2027.pycon.de/") == normalize_url_pointer("https://2027.pycon.de")
+
+    def test_fragment_is_different_pointer(self):
+        assert normalize_url_pointer("http://pycon.sg/#sponsors") != normalize_url_pointer("http://pycon.sg/")
+
+    def test_path_is_different_pointer(self):
+        assert normalize_url_pointer("https://pycon.de/sponsoring/") != normalize_url_pointer("https://pycon.de/")
+
+    def test_subdomain_is_different_pointer(self):
+        assert normalize_url_pointer("https://cfp.pycon.de/") != normalize_url_pointer("https://pycon.de/")
+
+    def test_query_is_different_pointer(self):
+        assert normalize_url_pointer("https://pycon.de/?page=cfp") != normalize_url_pointer("https://pycon.de/")
+
+
+class TestDropRedundantLinkFields:
+    """Test removal of sub-page links identical to the main link."""
+
+    def test_cfp_link_same_as_link_dropped(self):
+        """Reproduces the PyCon DE 2027 case: cfp_link is just the homepage."""
+        data = [
+            {
+                "conference": "PyCon DE & PyData",
+                "year": 2027,
+                "link": "https://2027.pycon.de/",
+                "cfp_link": "https://2027.pycon.de/",
+                "cfp": "TBA",
+            },
+        ]
+        result = drop_redundant_link_fields(data)
+        assert "cfp_link" not in result[0]
+        assert result[0]["link"] == "https://2027.pycon.de/"
+
+    def test_all_redundant_sub_fields_dropped(self):
+        data = [
+            {
+                "conference": "Cheeky Conf",
+                "year": 2026,
+                "link": "https://cheeky.conf/",
+                "cfp_link": "https://cheeky.conf",
+                "sponsor": "http://www.cheeky.conf/",
+                "finaid": "https://cheeky.conf/",
+            },
+        ]
+        result = drop_redundant_link_fields(data)
+        assert "cfp_link" not in result[0]
+        assert "sponsor" not in result[0]
+        assert "finaid" not in result[0]
+
+    def test_anchor_on_homepage_kept(self):
+        """A #anchor is a different pointer (e.g. PyCon SG's sponsor link)."""
+        data = [
+            {
+                "conference": "PyCon Singapore",
+                "year": 2026,
+                "link": "http://pycon.sg/",
+                "sponsor": "http://pycon.sg/index.html#sponsors",
+            },
+        ]
+        result = drop_redundant_link_fields(data)
+        assert result[0]["sponsor"] == "http://pycon.sg/index.html#sponsors"
+
+    def test_sub_page_and_subdomain_kept(self):
+        data = [
+            {
+                "conference": "PyCon Africa",
+                "year": 2026,
+                "link": "https://africa.pycon.org/",
+                "cfp_link": "https://africa.pycon.org/2026/talks/proposals/",
+                "sponsor": "https://africa.pycon.org/2026/sponsor-us/",
+                "finaid": "https://africa.pycon.org/2026/opportunity-grants/",
+            },
+            {
+                "conference": "Sub Conf",
+                "year": 2026,
+                "link": "https://sub.conf/",
+                "cfp_link": "https://cfp.sub.conf/",
+            },
+        ]
+        result = drop_redundant_link_fields(data)
+        assert result[0]["cfp_link"] == "https://africa.pycon.org/2026/talks/proposals/"
+        assert result[0]["sponsor"] == "https://africa.pycon.org/2026/sponsor-us/"
+        assert result[0]["finaid"] == "https://africa.pycon.org/2026/opportunity-grants/"
+        assert result[1]["cfp_link"] == "https://cfp.sub.conf/"
+
+    def test_entry_without_link_untouched(self):
+        data = [{"conference": "No Link Conf", "year": 2026, "cfp_link": "https://example.com/"}]
+        result = drop_redundant_link_fields(data)
+        assert result[0]["cfp_link"] == "https://example.com/"
+
+    def test_entry_without_sub_fields_untouched(self):
+        data = [{"conference": "Plain Conf", "year": 2026, "link": "https://plain.conf/"}]
+        result = drop_redundant_link_fields(data)
+        assert result[0] == {"conference": "Plain Conf", "year": 2026, "link": "https://plain.conf/"}
diff --git a/tests/test_youtube_extraction.py b/tests/test_youtube_extraction.py
index 87da528d1f..e4eee280bd 100644
--- a/tests/test_youtube_extraction.py
+++ b/tests/test_youtube_extraction.py
@@ -75,6 +75,29 @@ def test_generic_mastodon_still_works(self, mock_links):
         assert "mastodon" in result
         assert "youtube" not in result
 
+    @patch("enrich_tba.get_all_links")
+    def test_google_maps_viewport_not_mastodon(self, mock_links):
+        """Google Maps /@lat,lng,zoom viewport URLs must not be detected as mastodon.
+
+        Regression test: a venue map link like
+        https://www.google.com/maps/place/Transformatorhuis/@52.386807,4.8698442,17z
+        contains "/@" but is not a Mastodon profile.
+        """
+        mock_links.return_value = [
+            "https://www.google.com/maps/place/Transformatorhuis/@52.386807,4.8698442,17z",
+        ]
+        result = extract_links_from_url("https://fastapiconf.com")
+        assert "mastodon" not in result
+
+    @patch("enrich_tba.get_all_links")
+    def test_user_at_instance_profile_still_works(self, mock_links):
+        """Full /@user@instance profile paths are still detected as mastodon."""
+        mock_links.return_value = [
+            "https://social.example.org/@pyconf@mastodon.social",
+        ]
+        result = extract_links_from_url("https://pyconf.org")
+        assert result.get("mastodon") == "https://social.example.org/@pyconf@mastodon.social"
+
     @patch("enrich_tba.get_all_links")
     def test_youtube_first_seen_wins(self, mock_links):
         """Only the first YouTube link is kept."""
diff --git a/utils/cfp_candidates.py b/utils/cfp_candidates.py
new file mode 100644
index 0000000000..b5f160b3a1
--- /dev/null
+++ b/utils/cfp_candidates.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+"""Emit conference series that likely need a new edition checked.
+
+A candidate is a series with no entry in _data/conferences.yml (nothing
+upcoming or TBA) whose latest archived edition is recent enough that the
+series is plausibly still alive. Output is JSON on stdout, newest first.
+
+Intended for the cfp-scout routine: run once at session start, then work
+from the JSON instead of re-reading the data files.
+"""
+
+import argparse
+import json
+from datetime import datetime
+from datetime import timezone
+from pathlib import Path
+
+import yaml
+
+CARRY_FIELDS = ("link", "place", "sub", "alt_name", "cfp_link")
+
+
+def load(path: Path) -> list[dict]:
+    if not path.exists():
+        return []
+    with path.open() as fh:
+        return yaml.safe_load(fh) or []
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "--lookback",
+        type=int,
+        default=2,
+        help="Only consider series whose latest edition is within this many years (default: 2)",
+    )
+    parser.add_argument("--base", type=Path, default=Path(), help="Repository root")
+    args = parser.parse_args()
+
+    current_year = datetime.now(tz=timezone.utc).year
+    cutoff = current_year - args.lookback
+
+    current_names = {c["conference"] for c in load(args.base / "_data/conferences.yml")}
+
+    latest: dict[str, dict] = {}
+    for conf in load(args.base / "_data/archive.yml"):
+        name = conf.get("conference")
+        year = conf.get("year") or 0
+        if not name or name in current_names:
+            continue
+        if year > latest.get(name, {}).get("latest_year", 0):
+            entry = {"conference": name, "latest_year": year}
+            entry.update({k: conf[k] for k in CARRY_FIELDS if conf.get(k)})
+            latest[name] = entry
+
+    candidates = sorted(
+        (info for info in latest.values() if info["latest_year"] >= cutoff),
+        key=lambda x: (-x["latest_year"], x["conference"]),
+    )
+    print(json.dumps({"generated": f"{current_year}", "count": len(candidates), "candidates": candidates}, indent=2))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/utils/check_data_loss.py b/utils/check_data_loss.py
new file mode 100644
index 0000000000..4f316088e0
--- /dev/null
+++ b/utils/check_data_loss.py
@@ -0,0 +1,90 @@
+"""Guard against silent conference loss during automated data merges.
+
+Compares snapshots of the conference data files taken before a merge with the
+files after the merge. Every (conference, year) pair that existed before must
+still exist afterwards - in any of the given files, since conferences may
+legitimately move between conferences.yml, archive.yml and legacy.yml.
+
+Exits non-zero if any conference disappeared, so CI can block the commit.
+A legitimate rename (via titles.yml mappings) will also trip this check;
+that is intentional - renames of existing entries should be reviewed by a
+human, not auto-committed.
+"""
+
+import argparse
+import sys
+from pathlib import Path
+
+import yaml
+
+
+def load_conference_keys(paths: list[str]) -> set[tuple[str, int | str]]:
+    """Collect (conference, year) pairs from a list of YAML data files.
+
+    Missing files are skipped, so the same invocation works whether or not
+    optional files like legacy.yml exist.
+    """
+    keys = set()
+    for path in paths:
+        file = Path(path)
+        if not file.exists():
+            continue
+        with file.open(encoding="utf-8") as f:
+            data = yaml.safe_load(f)
+        if not data:
+            continue
+        for entry in data:
+            if not isinstance(entry, dict):
+                continue
+            conference = entry.get("conference")
+            year = entry.get("year")
+            if conference:
+                keys.add((str(conference).strip(), year))
+    return keys
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description="Fail if conferences disappeared from the data files.",
+    )
+    parser.add_argument(
+        "--before",
+        nargs="+",
+        required=True,
+        help="Data files snapshotted before the merge",
+    )
+    parser.add_argument(
+        "--after",
+        nargs="+",
+        required=True,
+        help="Data files after the merge",
+    )
+    args = parser.parse_args()
+
+    before = load_conference_keys(args.before)
+    after = load_conference_keys(args.after)
+    missing = before - after
+
+    if missing:
+        print(
+            f"ERROR: {len(missing)} conference(s) disappeared during the merge:",
+            file=sys.stderr,
+        )
+        for conference, year in sorted(missing, key=str):
+            print(f"  - {conference} ({year})", file=sys.stderr)
+        print(
+            "\nAn automated merge must never delete or rename existing conferences.\n"
+            "This usually means two distinct conferences were fuzzy-matched into one\n"
+            "(e.g. 'PyCon Africa' vs 'PyCon South Africa'). Add the pair to\n"
+            "utils/tidy_conf/data/rejections.yml, or if the rename is intentional,\n"
+            "apply it manually.",
+            file=sys.stderr,
+        )
+        return 1
+
+    print(f"OK: all {len(before)} conference entries survived the merge.")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/utils/enrich_tba.py b/utils/enrich_tba.py
index bed4ec4bcf..93a24a6e10 100644
--- a/utils/enrich_tba.py
+++ b/utils/enrich_tba.py
@@ -272,6 +272,11 @@ def _domain_matches(domain: str, hosts: tuple[str, ...]) -> bool:
     return any(domain == h or domain.endswith(f".{h}") for h in hosts)
 
 
+# A Mastodon profile URL's path is exactly "/@handle" (or "/@user@instance").
+# Requiring this shape prevents false positives from other "/@" URLs, e.g.
+# Google Maps viewports like "/maps/place/Venue/@52.386807,4.8698442,17z".
+MASTODON_PROFILE_RE = re.compile(r"^/@[A-Za-z0-9_][\w.-]*(?:@[\w.-]+)?/?$")
+
 # Known Mastodon instances (common ones in tech/Python community)
 MASTODON_INSTANCES = {
     "mastodon.social",
@@ -366,8 +371,8 @@ def extract_links_from_url(url: str) -> dict[str, str]:
                 found["mastodon"] = link
                 seen_types.add("mastodon")
                 logger.debug(f"  Found mastodon: {link}")
-            elif "/@" in parsed_link.path:
-                # Generic /@username pattern - likely Mastodon-compatible
+            elif MASTODON_PROFILE_RE.match(parsed_link.path):
+                # Path is exactly /@username - likely Mastodon-compatible
                 found["mastodon"] = link
                 seen_types.add("mastodon")
                 logger.debug(f"  Found mastodon (generic): {link}")
diff --git a/utils/sort_yaml.py b/utils/sort_yaml.py
index 2eba1ae2ed..c627ee9513 100644
--- a/utils/sort_yaml.py
+++ b/utils/sort_yaml.py
@@ -22,6 +22,7 @@
     from tidy_conf.latlon import add_latlon
     from tidy_conf.links import check_link_availability
     from tidy_conf.links import check_mastodon_migration
+    from tidy_conf.links import drop_redundant_link_fields
     from tidy_conf.links import get_cache
     from tidy_conf.schema import Conference
     from tidy_conf.schema import get_schema
@@ -35,6 +36,7 @@
     from .tidy_conf.latlon import add_latlon
     from .tidy_conf.links import check_link_availability
     from .tidy_conf.links import check_mastodon_migration
+    from .tidy_conf.links import drop_redundant_link_fields
     from .tidy_conf.links import get_cache
     from .tidy_conf.schema import Conference
     from .tidy_conf.schema import get_schema
@@ -289,6 +291,10 @@ def sort_data(base="", prefix="", skip_links=False):
     logger.info("🏷️  Cleaning titles")
     data = tidy_titles(data)
 
+    # Drop sub-page links that just repeat the homepage
+    logger.info("🔗 Dropping redundant link fields")
+    data = drop_redundant_link_fields(data)
+
     # Add Sub
     logger.info("🏢 Adding submission types")
     data = auto_add_sub(data)
diff --git a/utils/tidy_conf/data/rejections.yml b/utils/tidy_conf/data/rejections.yml
index d9c6e345a3..4fa46225e0 100644
--- a/utils/tidy_conf/data/rejections.yml
+++ b/utils/tidy_conf/data/rejections.yml
@@ -1,4 +1,3 @@
----
 alt_name:
   AfroPython Conference:
     variations:
@@ -14,6 +13,11 @@ alt_name:
     variations:
     - PyCon Australia
     - PyCon AU
+  PyCon Africa:
+    variations:
+    - PyCon South Africa
+    - PyCon ZA
+    - PyConZA
   PyCon Austria:
     variations:
     - PyCon Australia
@@ -30,6 +34,9 @@ alt_name:
   PyCon Latin America:
     variations:
     - PyCon Latam
+  PyCon South Africa:
+    variations:
+    - PyCon Africa
   Python Austria:
     variations:
     - PyCon Australia
diff --git a/utils/tidy_conf/interactive_merge.py b/utils/tidy_conf/interactive_merge.py
index d511b802d6..c26225249a 100644
--- a/utils/tidy_conf/interactive_merge.py
+++ b/utils/tidy_conf/interactive_merge.py
@@ -55,6 +55,29 @@
 }
 
 
+def is_identical_name(s1: str, s2: str) -> bool:
+    """Check whether two conference names are genuinely identical.
+
+    A fuzzy score of 100 does NOT imply identity: token_set_ratio returns 100
+    whenever one name's tokens are a subset of the other's (e.g. "PyCon Africa"
+    vs "PyCon South Africa"). Only names that are equal after case and
+    whitespace normalization may be auto-merged without confirmation.
+
+    Parameters
+    ----------
+    s1 : str
+        First conference name to compare
+    s2 : str
+        Second conference name to compare
+
+    Returns
+    -------
+    bool
+        True if the names are identical after normalization
+    """
+    return " ".join(s1.lower().split()) == " ".join(s2.lower().split())
+
+
 def is_placeholder_value(value) -> bool:
     """Check if a value is a placeholder (TBA, TBD, None, empty).
 
@@ -276,6 +299,31 @@ def is_excluded(name1, name2):
         """Check if two conference names are in the combined exclusion list."""
         return frozenset([name1, name2]) in all_exclusions
 
+    def best_match(title_match):
+        """Extract (title, score) from a process.extract result (2- or 3-tuple)."""
+        match_result = title_match[0]
+        if len(match_result) == 3:
+            title, prob, _ = match_result
+        else:
+            title, prob = match_result
+        return title, prob
+
+    # Remote titles already spoken for by a YAML row with the genuinely
+    # identical name. No other YAML row may merge into these - otherwise two
+    # distinct conferences collapse into one row and one of them is lost
+    # (e.g. "PyCon South Africa" must not merge into remote "PyCon Africa"
+    # when a YAML "PyCon Africa" also exists).
+    identical_titles = set()
+    for _, row in df.iterrows():
+        if isinstance(row["title_match"], str) or not row["title_match"]:
+            continue
+        title, _prob = best_match(row["title_match"])
+        if is_identical_name(row["conference"], title):
+            identical_titles.add(title)
+
+    # Remote titles claimed by a YAML row during this run (title -> yaml name)
+    claimed_titles = {}
+
     # Process matches and track in report
     for i, row in df.iterrows():
         if isinstance(row["title_match"], str):
@@ -283,12 +331,7 @@ def is_excluded(name1, name2):
         if not row["title_match"]:
             continue
 
-        # Handle both 2-tuple and 3-tuple results from process.extract
-        match_result = row["title_match"][0]
-        if len(match_result) == 3:
-            title, prob, _ = match_result
-        else:
-            title, prob = match_result
+        title, prob = best_match(row["title_match"])
 
         conference_name = row["conference"]
         year = row.get("year", 0)
@@ -311,21 +354,45 @@ def is_excluded(name1, name2):
             df.at[i, "title_match"] = conference_name  # Use original name, not index
             record.match_type = "excluded"
             record.action = "kept_yaml"
-        elif prob >= EXACT_MATCH_THRESHOLD:
-            logger.debug(
-                f"Exact match: '{conference_name}' -> '{title}' (score: {prob})",
-            )
-            df.at[i, "title_match"] = title
-            record.match_type = "exact"
-            record.action = "merged"
+        elif prob >= EXACT_MATCH_THRESHOLD and is_identical_name(conference_name, title):
+            # Only genuinely identical names merge automatically. A score of
+            # 100 alone is NOT sufficient: token_set_ratio scores 100 whenever
+            # one name's tokens are a subset of the other's.
+            if title in claimed_titles and claimed_titles[title] != conference_name:
+                logger.warning(
+                    f"Remote '{title}' already claimed by '{claimed_titles[title]}', "
+                    f"keeping '{conference_name}' separate",
+                )
+                df.at[i, "title_match"] = conference_name
+                record.match_type = "exact"
+                record.action = "kept_yaml"
+            else:
+                logger.debug(
+                    f"Exact match: '{conference_name}' -> '{title}' (score: {prob})",
+                )
+                df.at[i, "title_match"] = title
+                claimed_titles[title] = conference_name
+                record.match_type = "exact"
+                record.action = "merged"
         elif prob >= FUZZY_MATCH_THRESHOLD:
+            if title in identical_titles or title in claimed_titles:
+                # Remote row already belongs to its identically-named YAML
+                # entry (or was claimed earlier) - never merge another
+                # conference into it.
+                logger.info(
+                    f"Skipping fuzzy match: remote '{title}' already belongs to an "
+                    f"identically-named entry, keeping '{conference_name}' separate",
+                )
+                df.at[i, "title_match"] = conference_name
+                record.match_type = "fuzzy"
+                record.action = "kept_yaml"
             # Prompt user for fuzzy matches that aren't excluded
-            logger.info(
-                f"Fuzzy match candidate: '{conference_name}' -> '{title}' (score: {prob})",
-            )
-            if not query_yes_no(
+            elif not query_yes_no(
                 f"Do '{row['conference']}' and '{title}' match? (y/n): ",
             ):
+                logger.info(
+                    f"Fuzzy match rejected: '{conference_name}' vs '{title}' (score: {prob})",
+                )
                 new_rejections[title].append(conference_name)
                 new_rejections[conference_name].append(title)
                 df.at[i, "title_match"] = conference_name  # Use original name, not index
@@ -334,6 +401,7 @@ def is_excluded(name1, name2):
             else:
                 new_mappings[conference_name].append(title)
                 df.at[i, "title_match"] = title
+                claimed_titles[title] = conference_name
                 record.match_type = "fuzzy"
                 record.action = "merged"
         else:
diff --git a/utils/tidy_conf/links.py b/utils/tidy_conf/links.py
index c630d352a2..a3adec7241 100644
--- a/utils/tidy_conf/links.py
+++ b/utils/tidy_conf/links.py
@@ -9,6 +9,71 @@
 import requests
 from tqdm import tqdm
 
+# Sub-page link fields that must point somewhere other than the main link.
+# A cfp_link/sponsor/finaid that is just the homepage again carries no
+# information (e.g. "cfp_link: https://2027.pycon.de/" on the PyCon DE entry
+# whose link is https://2027.pycon.de/) - it should be a different page, a
+# subdomain, or at least a #anchor on the homepage.
+REDUNDANT_LINK_FIELDS = ("cfp_link", "sponsor", "finaid")
+
+
+def normalize_url_pointer(url: str) -> tuple:
+    """Normalize a URL for same-pointer comparison.
+
+    Two URLs are the same pointer when they only differ by scheme
+    (http/https), a "www." prefix, host case, or a trailing slash.
+    Anything else - path, subdomain, query, or #fragment - makes them
+    different pointers.
+
+    Parameters
+    ----------
+    url : str
+        URL to normalize
+
+    Returns
+    -------
+    tuple
+        Comparable (host, path, params, query, fragment) tuple
+    """
+    parsed = urlparse(str(url).strip())
+    netloc = parsed.netloc.lower().removeprefix("www.")
+    return (netloc, parsed.path.rstrip("/"), parsed.params, parsed.query, parsed.fragment)
+
+
+def drop_redundant_link_fields(data: list) -> list:
+    """Drop sub-page link fields that are the same pointer as the main link.
+
+    Goes through cfp_link/sponsor/finaid on each conference and
+    removes any that just repeat the conference's main link. This catches
+    upstream sources that fill every URL column with the homepage.
+
+    Parameters
+    ----------
+    data : list
+        List of conference dictionaries
+
+    Returns
+    -------
+    list
+        The same list with redundant link fields removed
+    """
+    for q in data:
+        if not isinstance(q, dict):
+            continue
+        link = q.get("link")
+        if not link:
+            continue
+        base = normalize_url_pointer(link)
+        for field in REDUNDANT_LINK_FIELDS:
+            value = q.get(field)
+            if value and normalize_url_pointer(value) == base:
+                tqdm.write(
+                    f"Dropping redundant '{field}' from {q.get('conference')} {q.get('year')}: "
+                    f"'{value}' is the same pointer as the main link",
+                )
+                del q[field]
+    return data
+
 
 def get_cache_location():
     # Check if the URL is cached