Surface .env load errors

[6543]

currently we just drop errors loading from loading .env, this is hard to debug and can cause confusion.

Before

Now

[woodpecker-bot]

Surge PR preview deployment was removed

[codecov]

Codecov Report

❌ Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.32%. Comparing base (0fa872e) to head (76732c3).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/agent/main.go	0.00%	4 Missing ⚠️
cmd/cli/main.go	0.00%	4 Missing ⚠️
cmd/server/main.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6707      +/-   ##
==========================================
- Coverage   44.35%   44.32%   -0.03%     
==========================================
  Files         436      436              
  Lines       29178    29190      +12     
==========================================
- Hits        12941    12938       -3     
- Misses      15135    15148      +13     
- Partials     1102     1104       +2     

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