fix(docker): add --home CLI flag and Docker deployment docs

[SonicBotMan]

Summary

Fixes #1520

When MemTensor runs inside a Docker container and the daemon is started directly from the container's entrypoint.sh (not through the Python adapter's bridge_client.py), the bridge cannot locate its config.yaml, resulting in missing embedding/LLM providers and wrong data directory.

Changes

1. bridge.cts — --home CLI flag

Adds a --home=<path> CLI argument that sets MEMOS_HOME before the config is loaded via resolveHome(). This is the simplest way to configure the bridge in Docker:

node --experimental-strip-types bridge.cts --agent=hermes --daemon --home=/opt/data/home/.hermes/memos-plugin

Also updated the file's header comment to document all CLI flags and env vars.

2. docs/DOCKER.md — Docker Deployment Guide

New document covering:

• The config discovery problem and symptoms
• Three solutions (--home flag, MEMOS_HOME env var, MEMOS_CONFIG_FILE env var)
• Config resolution priority table
• Minimal working config example
• Verification steps
• Common pitfalls troubleshooting table

3. README.md — Configuration Discovery section

Added a "Configuration Discovery" section documenting the 4-level priority for config resolution, with a link to the Docker guide.

4. adapters/hermes/README.md — Docker startup example

Added a "Docker / Manual Daemon Startup" subsection showing the --home flag usage.

Testing

• bridge.cts changes are additive (new CLI arg + env var injection before bootstrap)
• No behavior change for existing deployments where MEMOS_HOME is already set or the default path works
• The --home flag resolves to an absolute path before being passed to process.env, consistent with resolveHome() behavior

How Docker users should use this

Before (broken — daemon can't find config):

# In entrypoint.sh:
node bridge.cts --daemon --port 18992 --viewer-port 18901
# → Embedding: disabled, LLM: disabled, DB: empty path

After (working):

# In entrypoint.sh:
node bridge.cts --daemon --agent=hermes --home=/opt/data/home/.hermes/memos-plugin
# → Reads config.yaml with embedding + LLM + branding