Add beginner documentation and onboarding materials

[Copilot]

POCS had no beginner documentation. New users faced undefined terminology, no quickstart path, and duplicated CLI instructions across multiple files.

Documentation Added

• Conceptual overview (docs/conceptual-overview.md) - System architecture and workflow without requiring installation
• Architecture guide (docs/architecture-for-beginners.md) - Layered design with ASCII diagrams and component interactions
• Glossary (docs/glossary.md) - 60+ astronomy, hardware, and software term definitions
• CLI reference (docs/cli-guide.md) - Consolidated command documentation (removed ~190 lines of duplication from 3 other files)
• Example script (examples/beginner_simulation.py) - Runnable simulation demonstrating initialization and device inspection

Changes

• Moved "Beginner Resources" to top-level README section (immediately after project description)
• Positioned CLI as primary interface: pocs config setup → pocs run auto workflow
• Standardized terminology: "observing" not "exposing"; "tracking" state is verification check, not when tracking starts
• Aligned component ordering across all docs: POCS → Scheduler → Observatory → Hardware Drivers
• Converted file references to clickable markdown links
• Example script uses local conf_files/pocs.yaml instead of downloading from GitHub

Files Changed

8 files changed, 1521 insertions(+)

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[wtgee]

@copilot can you rebase and squash the commits?

[Copilot]

@copilot can you rebase and squash the commits?

I've successfully squashed all 28 commits into a single commit locally (commit 78fe269). However, I'm unable to force push the squashed commit to the remote branch because:

1. The available tools don't support force pushing when branches have diverged
2. The GitHub token isn't accessible in my environment for direct git operations

The squashed commit is ready with a comprehensive commit message covering all the changes. To complete the rebase, you'll need to either:

• Manually force push from your local machine after pulling my branch, or
• Grant the necessary permissions for force push operations

The single commit contains all 8 file changes (1,521 insertions) with proper attribution.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.83%. Comparing base (62caa62) to head (b14776e).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1382      +/-   ##
===========================================
+ Coverage    64.46%   64.83%   +0.37%     
===========================================
  Files          103      104       +1     
  Lines         9368     9444      +76     
  Branches       831      831              
===========================================
+ Hits          6039     6123      +84     
+ Misses        3188     3178      -10     
- Partials       141      143       +2     

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[wtgee]

LGTM