Add INSPECT verb example (character counting/replacement)

[devin-ai-integration]

Summary

Adds a new inspect/ example directory demonstrating the COBOL INSPECT verb for character counting (tallying) and replacement. Includes 10 examples covering:

• TALLYING: all occurrences, leading characters, characters before initial, multiple conditions (with two tally counters)
• REPLACING: all occurrences, leading characters, first occurrence, before initial
• CONVERTING: character set translation (lowercase → uppercase)
• Combined TALLYING and REPLACING in a single statement

Two files added:

• inspect/inspect.cbl — the example program
• inspect/README.md — documentation with syntax reference and expected output

No existing files were modified.

Updates since last revision

• Removed unused variable ws-after-str; replaced with ws-tally-count-2 for Example 4
• Improved Example 4 to genuinely demonstrate multiple tallying conditions by using two separate tally counters (ws-tally-count for "A", ws-tally-count-2 for "B") in a single INSPECT statement
• Fixed Example 8 to use BEFORE INITIAL with a comma delimiter (avoids replacing trailing padding spaces)
• Updated README output to match actual compiled program output

Review & Testing Checklist for Human

• Compile and run with cobc -x inspect/inspect.cbl -o /tmp/inspect && /tmp/inspect and verify output matches inspect/README.md — the README output was hand-written to match and may have subtle trailing-space discrepancies
• Verify examples are pedagogically distinct — Examples 1 and 4 both tally "A" occurrences, but Example 4 additionally tallies "B" with a second counter; confirm this is clear enough as a differentiated example
• Spot-check COBOL conventions — confirm header block, indentation, and folder structure match existing examples (e.g., trim/, unstring/)

Notes

• Program was compiled and tested with GnuCOBOL (cobc) during development; all 10 examples produce correct output
• Follows existing repo conventions (header comment block, folder structure with README + .cbl file)
• Link to Devin run
• Requested by @shayanshafii

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 4 additional findings.