fix: replace Homebrew with direct installs in Dockerfile

Homebrew refuses to run as root in Docker containers.
Replace all brew installs with:
- GitHub release binaries (gogcli, goplaces, himalaya, obsidian-cli)
- go install (songsee)
- npm (gemini-cli)
- uv tool (openai-whisper)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile.oauth

@@ -2,7 +2,7 @@ FROM birdxs/nanobot:latest
 
 # ── Skill dependencies ──────────────────────────────────────────────
 
-# APT: ffmpeg (video-frames), jq, tmux, build-essential (for go/brew)
+# APT: ffmpeg (video-frames, whisper), jq, tmux, build-essential (for go)
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ffmpeg jq tmux build-essential procps && rm -rf /var/lib/apt/lists/*
 
@@ -17,25 +17,39 @@ RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg \
 RUN curl -fsSL https://go.dev/dl/go1.23.6.linux-amd64.tar.gz | tar -C /usr/local -xzf -
 ENV PATH="/usr/local/go/bin:/root/go/bin:${PATH}"
 
-# Go tools: blogwatcher, blu (blucli), gifgrep, sonos (sonoscli), wacli
+# Go tools: blogwatcher, blu (blucli), gifgrep, sonos (sonoscli), wacli, songsee
 RUN go install github.com/Hyaxia/blogwatcher/cmd/blogwatcher@latest && \
     go install github.com/steipete/blucli/cmd/blu@latest && \
     go install github.com/steipete/gifgrep/cmd/gifgrep@latest && \
     go install github.com/steipete/sonoscli/cmd/sonos@latest && \
-    go install github.com/steipete/wacli/cmd/wacli@latest
+    go install github.com/steipete/wacli/cmd/wacli@latest && \
+    go install github.com/steipete/songsee/cmd/songsee@latest
 
-# Homebrew (for tools only available via brew taps)
-RUN NONINTERACTIVE=1 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-ENV PATH="/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:${PATH}"
-RUN brew tap steipete/tap && \
-    brew install steipete/tap/gogcli steipete/tap/goplaces steipete/tap/songsee \
-    gemini-cli yakitrak/yakitrak/obsidian-cli himalaya openai-whisper
+# Pre-built binaries from GitHub releases
+# gogcli (gog)
+RUN curl -fsSL https://github.com/steipete/gogcli/releases/download/v0.9.0/gogcli_0.9.0_linux_amd64.tar.gz \
+    | tar -xzf - -C /usr/local/bin gog
 
-# Node tools: oracle
-RUN npm install -g @steipete/oracle
+# goplaces
+RUN curl -fsSL https://github.com/steipete/goplaces/releases/download/v0.2.1/goplaces_0.2.1_linux_amd64.tar.gz \
+    | tar -xzf - -C /usr/local/bin goplaces
 
-# Python tools: nano-pdf
-RUN uv tool install nano-pdf
+# himalaya (email CLI)
+RUN curl -fsSL https://github.com/pimalaya/himalaya/releases/download/v1.1.0/himalaya.x86_64-linux.tgz \
+    | tar -xzf - -C /usr/local/bin himalaya
+
+# obsidian-cli (release binary is named notesmd-cli, skill expects obsidian-cli)
+RUN curl -fsSL -o /tmp/obsidian.tar.gz https://github.com/yakitrak/obsidian-cli/releases/download/v0.3.0/notesmd-cli_0.3.0_linux_amd64.tar.gz && \
+    tar -xzf /tmp/obsidian.tar.gz -C /tmp notesmd-cli && \
+    mv /tmp/notesmd-cli /usr/local/bin/obsidian-cli && \
+    rm /tmp/obsidian.tar.gz
+
+# Node tools: oracle, gemini-cli
+RUN npm install -g @steipete/oracle @google/gemini-cli
+
+# Python tools: nano-pdf, openai-whisper
+RUN uv tool install nano-pdf && \
+    uv tool install openai-whisper
 ENV PATH="/root/.local/bin:${PATH}"
 
 # ── Nanobot source ──────────────────────────────────────────────────