Add gopher documentation to README and execution notes

- Update README with gopher/phlog section, publishing commands, URLs,
  and first-time SDF setup instructions
- Add gopher workflow documentation to execution-notes.txt
- Include planning docs in docs/ directory

scripts/execution-notes.txt

@@ -98,4 +98,47 @@ To block a reply:
      - "https://tilde.zone/@someone/123456789"
 
 
+GOPHER / PHLOG (SDF Gopherspace)
+--------------------------------
+Posts can be published to gopher by adding `phlog: true` to frontmatter.
+
+Deploy to gopher (after --gopher-only for first run, then use --gopher):
+
+    ./scripts/remote_publish.sh --gopher       # Hugo + Gopher
+    ./scripts/remote_publish.sh --gopher-only  # Gopher only
+
+What it does:
+  1. Converts posts with `phlog: true` to plain text (70 char wrap)
+  2. Generates gophermaps for each category
+  3. Rsyncs to ~/gopher/blog/ on SDF
+
+URLs after deployment:
+  - Gopher root:    gopher://sdf.org/1/users/mnw/
+  - Blog index:     gopher://sdf.org/1/users/mnw/blog/
+  - Frank's Couch:  gopher://sdf.org/1/users/mnw/blog/franks-couch/
+  - Fun Center:     gopher://sdf.org/1/users/mnw/blog/fun-center/
+  - Web proxy:      https://gopher.floodgap.com/gopher/gw?a=gopher://sdf.org/1/users/mnw/
+
+Gopher scripts (in scripts/gopher/):
+  - convert_to_gopher.py     Markdown → gopher plain text
+  - generate_gophermaps.py   Build category menus
+  - ascii_art.py             Headers/footers
+  - update_root_gophermap.py Update main gophermap (one-time)
+
+References:
+  - SDF Gopher Setup: https://wiki.sdf.org/doku.php?id=gopher_site_setup_and_hosting_features
+  - Tilde.town Guide: https://tilde.town/wiki/editing-your-homepage/gopher.html
+
+
+PUBLISHING / REMOTE DEPLOY
+--------------------------
+Push changes to SDF and build:
+
+    ./scripts/remote_publish.sh              # Hugo only
+    ./scripts/remote_publish.sh --gopher     # Hugo + Gopher
+    ./scripts/remote_publish.sh --gopher-only # Gopher only
+
+The script handles git commit/push prompts automatically.
+
+
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