Add post management admin UI and switch to modernc.org/sqlite

- Replace custom CGO sqlite driver with modernc.org/sqlite (registered as
  "sqlite3"); a local compat shim under compat/sqlite/ provides the same
  import path and WAL-mode behaviour using system libsqlite3 while network
  access is unavailable — swapping to the real pure-Go package later only
  requires removing the replace directive and running go get.

- Add internal/admin/server.go: HTTP handler for /admin/ that serves a
  server-side-rendered post management UI (list, new, edit, delete). Posts
  are stored as Markdown files under content/posts/ and rebuilt via the
  existing Builder after every write. Basic auth is checked against the
  .passwords file when it exists.

- Add cmd/nebbet/main.go: unified CLI with build, watch, serve (HTTP server
  with admin + file server + watch), and user subcommands.

- Update builder.BuildAll to skip content/admin/ — admin pages are served
  dynamically and must never appear in the static output directory.

- Mark content/admin/index.md as draft so the old static placeholder is
  not built even if the admin skip logic is bypassed.

- Fix .gitignore: use /nebbet (root-only) so the pattern no longer
  accidentally ignores the cmd/nebbet/ source directory.

https://claude.ai/code/session_01WLuSGxJhNs2cFM2zJzSsTx

1 files changed, 5 insertions, 0 deletions

diff --git a/internal/builder/builder.go b/internal/builder/builder.go
index 40be377..59bb71b 100644
--- a/internal/builder/builder.go
+++ b/internal/builder/builder.go
@@ -62,6 +62,11 @@ func (b *Builder) BuildAll() error {
 		if err != nil || d.IsDir() || !strings.HasSuffix(path, ".md") {
 			return err
 		}
+		// Skip content/admin/ — served dynamically by the admin HTTP server.
+		rel, _ := filepath.Rel(b.ContentDir, path)
+		if strings.HasPrefix(filepath.ToSlash(rel), "admin/") || filepath.ToSlash(rel) == "admin" {
+			return nil
+		}
 		return b.BuildFile(path, importMap)
 	})
 }