docs: fix typos across documentation and code comments

[mason5052]

Description of the Change

Problem

Multiple typos, inconsistent capitalization, and misspelled filenames across the PentAGI documentation and code:

• Product name typo "PegtAGI" in frontend/README.md
• Inconsistent capitalization "PentAGi" (lowercase 'i') in backend/docs/config.md (10 occurrences)
• Misspelled third-party names in EULA.md: "Depp Infra" (should be "Deep Infra"), "Traversal" (should be "Traversaal")
• Misleading OAuth env var names in README.md: GITHUB_CLIENT_ID / GOOGLE_CLIENT_ID don't match the actual env vars used in .env.example and docker-compose.yml (OAUTH_GITHUB_CLIENT_ID / OAUTH_GOOGLE_CLIENT_ID)
• Typo "applacation" in auth.go comments (3 occurrences)
• Typo "pemissions" in auth_middleware.go error message
• Misspelled filenames: sreenshots.go, processor-wizard-integation.md, terminal-wizard-integation.md

Solution

• Fix all product name typos to "PentAGI"
• Fix third-party service names to match their official branding
• Update README.md OAuth env var references to match actual config
• Fix spelling errors in code comments and error messages
• Rename misspelled source files

Type of Change

• Documentation update

Areas Affected

• Core Services (Frontend UI/Backend API)
• Documentation

Testing and Verification

Test Configuration

PentAGI Version: v1.1.0 (master @ f111863)
Docker Version: N/A (documentation and comment changes)
Host OS: Windows 11
LLM Provider: N/A

Test Steps

1. Verify all "PentAGI" references are consistently capitalized
2. Verify OAuth env var names in README match .env.example and docker-compose.yml
3. Verify renamed files maintain correct Go package declarations and markdown links
4. Confirm no functional code changes -- only comments, error messages, docs, and filenames

Test Results

• All changes are cosmetic (documentation, comments, error messages, file renames)
• No functional code logic was modified
• File renames preserve original content and package declarations

Security Considerations

No security implications. Changes are limited to documentation, comments, error messages, and file renames.

Performance Impact

None. No functional code changes.

Deployment Notes

No special deployment considerations. File renames (sreenshots.go -> screenshots.go, etc.) may require updating any internal references, but no such references were found in the codebase.

Checklist

Code Quality

• My code follows the project's coding standards
• I have added/updated necessary documentation
• I have added tests to cover my changes
• All new and existing tests pass
• I have run go fmt and go vet (for Go code)

Security

• I have considered security implications
• Changes maintain or improve the security model
• Sensitive information has been properly handled

Compatibility

• Changes are backward compatible
• Dependencies are properly updated

Documentation

• Documentation is clear and complete
• Comments are added for non-obvious code

Additional Notes

Files changed (9):

• EULA.md -- Fix "Depp Infra" -> "Deep Infra", "Traversal" -> "Traversaal"
• README.md -- Fix OAuth env var names to match actual config
• backend/docs/config.md -- Fix "PentAGi" -> "PentAGI" (10 occurrences)
• backend/pkg/server/auth/auth_middleware.go -- Fix "pemissions" -> "permissions"
• backend/pkg/server/services/auth.go -- Fix "applacation" -> "application" (3 occurrences)
• backend/pkg/server/services/sreenshots.go -> screenshots.go (rename)
• backend/docs/installer/processor-wizard-integation.md -> processor-wizard-integration.md (rename)
• backend/docs/installer/terminal-wizard-integation.md -> terminal-wizard-integration.md (rename)
• frontend/README.md -- Fix "PegtAGI" -> "PentAGI"

[Copilot]

Pull request overview

This PR corrects multiple typos and naming inconsistencies across documentation and code comments in the PentAGI codebase. The changes improve professionalism and accuracy without modifying any functional code logic.

Changes:

• Fixed product name typos ("PegtAGI" and "PentAGi") to correct "PentAGI" spelling across documentation
• Corrected OAuth environment variable names in README.md to match actual configuration (.env.example, docker-compose.yml)
• Fixed spelling errors in code comments and error messages ("applacation" -> "application", "pemissions" -> "permissions")
• Corrected third-party service names in EULA.md ("Depp Infra" -> "Deep Infra", "Traversal" -> "Traversaal")
• Renamed misspelled files: sreenshots.go -> screenshots.go, and two markdown files with "integation" -> "integration"

Reviewed changes

Copilot reviewed 6 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
frontend/README.md	Fixed product name typo from "PegtAGI" to "PentAGI"
backend/pkg/server/services/screenshots.go	File renamed from sreenshots.go (misspelling fix)
backend/pkg/server/services/auth.go	Fixed "applacation" to "application" in 3 OAuth-related comments
backend/pkg/server/auth/auth_middleware.go	Fixed "pemissions" to "permissions" in error message
backend/docs/installer/terminal-wizard-integration.md	File renamed from terminal-wizard-integation.md (misspelling fix)
backend/docs/installer/processor-wizard-integration.md	File renamed from processor-wizard-integation.md (misspelling fix)
backend/docs/config.md	Fixed "PentAGi" to "PentAGI" in 10 occurrences throughout configuration guide
README.md	Corrected OAuth environment variable names to match actual config (OAUTH_GITHUB_CLIENT_ID, OAUTH_GOOGLE_CLIENT_ID)
EULA.md	Fixed third-party service names: "Depp Infra" to "Deep Infra" and "Traversal" to "Traversaal"

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[asdek]

@mason5052
thanks for the PR