Simplify integration and add demo gifs

[dacorvo]

This removes the options to add funes to an agent just for a project.

This also adds two demo gifs to the README.

[Copilot]

Pull request overview

This PR simplifies “add agent” integrations by removing project-scoped install options (standardizing on user-scope installs), and updates documentation with new demo GIFs and revised automation guidance.

Changes:

• Remove project-scope / destination options for agent integrations (Claude, Pi, OpenCode) and standardize installs on user scope.
• Add and reference new demo GIFs, plus new VHS tape sources for regenerating them.
• Rework automation docs to split indexing vs publishing hooks (per-turn indexing + session-boundary publishing).

Reviewed changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/pi.rs	Makes funes add pi install to a fixed user-wide location and always pi install it.
src/opencode.rs	Makes funes add opencode always write user config (no project-scope).
src/main.rs	Simplifies CLI subcommand variants by removing --global/--dest options.
src/claude.rs	Makes funes add claude always register at user scope.
skills/funes/SKILL.md	Removes the optional skill documentation file.
README.md	Adds demo GIFs and adjusts “get started” instructions/snippets.
docs/demo/hub-store.tape	Adds VHS tape for the “Hub store” demo GIF.
docs/demo/cross-agents.tape	Adds VHS tape for the “cross agents” demo GIF.
docs/automation.md	Updates hook guidance and adds split scripts for index vs push.

Comments suppressed due to low confidence (1)

docs/automation.md:127

• find_bin is used as funes="$(find_bin funes ...)", but the command -v ... && return 0 branch returns success without printing the resolved path, so $funes becomes empty even when funes is on PATH.

find_bin() {
    command -v "$1" 2>/dev/null && return 0
    for d in "$HOME/.local/bin" /opt/homebrew/bin /usr/local/bin "$HOME/go/bin" /usr/bin /bin; do
        [ -x "$d/$1" ] && { printf '%s\n' "$d/$1"; return 0; }
    done

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