refactor(pop-cli): route progress UI through cli abstractions

[moliholy]

Closes #970.

Summary

Refactors Pop CLI progress reporting to use CLI-level abstractions, keeping progress output consistent across human and JSON modes.

Hardens CI behavior by fixing Docker build context usage and ensuring Docker availability for Linux integration jobs that run verifiable contract flows.

Reduces workflow duplication by extracting shared routines into reusable composite actions and adopting them across integration, coverage, and release pipelines.

[moliholy]

@codex

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Delightful!

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[codecov]

Codecov Report

❌ Patch coverage is 45.24887% with 121 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.48%. Comparing base (1bf4bf3) to head (62bc333).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pop-cli/src/cli.rs	40.00%	36 Missing ⚠️
...es/pop-cli/src/commands/test/on_runtime_upgrade.rs	61.29%	0 Missing and 12 partials ⚠️
crates/pop-cli/src/common/subprocess.rs	0.00%	9 Missing ⚠️
crates/pop-cli/src/common/wallet.rs	0.00%	8 Missing ⚠️
crates/pop-cli/src/commands/up/contract.rs	0.00%	7 Missing ⚠️
crates/pop-cli/src/commands/up/network.rs	22.22%	7 Missing ⚠️
crates/pop-cli/src/commands/bench/pallet.rs	50.00%	0 Missing and 6 partials ⚠️
crates/pop-cli/src/commands/test/execute_block.rs	60.00%	0 Missing and 6 partials ⚠️
crates/pop-cli/src/commands/test/fast_forward.rs	58.33%	0 Missing and 5 partials ⚠️
crates/pop-cli/src/commands/call/contract.rs	0.00%	4 Missing ⚠️
... and 15 more

@@            Coverage Diff             @@
##             main     #988      +/-   ##
==========================================
+ Coverage   58.27%   58.48%   +0.20%     
==========================================
  Files         176      177       +1     
  Lines       40332    40465     +133     
  Branches    40332    40465     +133     
==========================================
+ Hits        23505    23664     +159     
+ Misses      14600    14551      -49     
- Partials     2227     2250      +23     

Files with missing lines	Coverage Δ
crates/pop-cli/src/commands/new/contract.rs	78.12% <100.00%> (+2.73%)	⬆️
crates/pop-cli/src/commands/new/pallet.rs	83.20% <100.00%> (ø)
crates/pop-cli/src/commands/upgrade.rs	80.30% <100.00%> (ø)
crates/pop-cli/src/common/binary.rs	73.60% <100.00%> (ø)
crates/pop-cli/src/commands/bench/block.rs	45.45% <0.00%> (ø)
crates/pop-cli/src/commands/bench/machine.rs	44.44% <0.00%> (ø)
crates/pop-cli/src/commands/bench/storage.rs	29.87% <0.00%> (ø)
crates/pop-cli/src/commands/build/spec.rs	78.81% <0.00%> (+1.36%)	⬆️
crates/pop-cli/src/commands/call/chain.rs	69.94% <50.00%> (+7.20%)	⬆️
crates/pop-cli/src/commands/new/chain.rs	44.05% <0.00%> (-8.61%)	⬇️
... and 19 more

... and 41 files with indirect coverage changes

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[al3mart]

Nice!