chore: remove git-ai-commit tooling and context docs

.devcontainer/post-create.sh

@@ -43,48 +43,6 @@ p.write_text(
 PY
 fi
 
-# Expose repo scripts that follow the git-<subcommand> naming convention as
-# proper git subcommands by symlinking them into /usr/local/bin.  This makes
-# `git ai-commit` work in any directory without requiring scripts/ on PATH.
-ln -sf /workspaces/phlex/scripts/git-ai-commit /usr/local/bin/git-ai-commit
-
-# Adjust MANPATH to enable `git help ai-commit` to find the man page.
-# The scripts/man/man1 directory contains git-subcommand man pages.
-# Prepend the repo man directory and ensure the resulting MANPATH always has
-# an empty field (which tells man to search the system default paths).  When
-# there is no pre-existing MANPATH, or the existing one lacks an empty field,
-# a trailing colon is appended to provide one; if an empty field already
-# exists it is preserved as-is.
-cat >> /root/.bashrc <<'EOF'
-
-prepend_to_manpath() {
-  # Prepends one or more paths to MANPATH, preserving the position of any
-  # existing empty field (which tells man(1) where to insert the system
-  # default paths).  Handles unset, empty, or degenerate MANPATH safely.
-  # If MANPATH has no empty field, a trailing : is added (system paths last).
-  local prefix
-  prefix=$(IFS=:; echo "$*")
-  # Unset or degenerate (only colons): start fresh, system defaults last.
-  if [[ -z ${MANPATH+set} || -z "${MANPATH//:}" ]]; then
-    export MANPATH="${prefix}:"
-    return
-  fi
-  case "$MANPATH" in
-    *::*|*:|:*)
-      # Already has an empty field somewhere; prepend and keep it in place.
-      # :foo  -> newpath::foo  (leading : becomes embedded :: after prepend)
-      # foo:  -> newpath:foo:  (trailing : stays trailing)
-      # f::b  -> newpath:f::b  (embedded :: stays embedded)
-      export MANPATH="${prefix}:${MANPATH}" ;;
-    *)
-      # No empty field: add trailing : so system paths are still searched.
-      export MANPATH="${prefix}:${MANPATH}:" ;;
-  esac
-}
-
-prepend_to_manpath "/workspaces/phlex/scripts/man"
-EOF
-
 # Install pre-commit hooks if available.
 if command -v prek >/dev/null 2>&1; then
   prek install || true