Add book creation and listing features

[gaganaparvathi09]

Completed the GitHub Enablement Task.

• Added create_book feature
• Added list_all_books feature
• Merged feature into develop

[greptile-apps]

Greptile Summary

This PR adds create_book and list_all_books text files for the author (gagana_parvathi_book_app/) as part of a GitHub enablement task, but it also inadvertently includes several changes that affect other contributors' work and violate the repository's directory conventions.

• Unauthorized changes to other contributors' files: my_intro.txt (belonging to ChrisNijo/Pranav) is overwritten, and two files under Akash_A_book_app/ and akash_a_book_app/ are deleted entirely — both owned by a different contributor.
• Structural issues in the PR: Files from many other contributors are bundled in, including a file committed under the placeholder yourname_book_app/ template, a wrongly nested duplicate path for aswika_grifith_book_app, an empty root-level Athira_create_book.txt, a duplicate line appended to the shared list_all_books.txt, and a keziah_mariam_raison_book_app/create_book.txt that starts with a GNU nano editor header line.

Confidence Score: 2/5

Not safe to merge — this PR overwrites another contributor's intro file and permanently deletes two files belonging to a different contributor.

The PR overwrites my_intro.txt (a file belonging to ChrisNijo/Pranav) and deletes both Akash_A_book_app/add_books_feature/create_book.txt and akash_a_book_app/add_books_feature/create_book.txt, erasing another contributor's work. Additional issues include a duplicate line in the shared list_all_books.txt, files committed under the placeholder yourname_book_app/ template directory, a wrongly nested path for one contributor's file, and a create_book.txt that starts with a GNU nano editor title bar.

my_intro.txt, Akash_A_book_app/add_books_feature/create_book.txt, akash_a_book_app/add_books_feature/create_book.txt, list_all_books.txt, yourname_book_app/add_books_feature/create_book.txt

Important Files Changed

Filename	Overview
my_intro.txt	Another contributor's intro text is overwritten with a different person's name — unauthorized modification of a peer's file.
Akash_A_book_app/add_books_feature/create_book.txt	Deleted by this PR along with its lowercase counterpart — removes another contributor's submitted files.
list_all_books.txt	A duplicate line is appended to the shared file, repeating the line that already exists on line 2.
yourname_book_app/add_books_feature/create_book.txt	Files committed into the placeholder template directory instead of the author's own named directory.
aswika_grifith_book_app/add_books_feature/aswika_grifith_book_app/add_books_feature/list_all_books.txt	File placed at an incorrectly nested duplicate path; the app directory name is repeated in the tree.
keziah_mariam_raison_book_app/add_books_feature/create_book.txt	GNU nano editor title bar committed as the first line of the file, followed by many blank lines before the actual content.
Athira_create_book.txt	Empty file added at the repository root rather than inside the expected add_books_feature/ subdirectory.
gagana_parvathi_book_app/add_books_feature/create_book.txt	Author's own create_book.txt added correctly under their named directory with appropriate content.
gagana_parvathi_book_app/add_books_feature/list_all_books.txt	Author's own list_all_books.txt added correctly under their named directory with appropriate content.
shaheen_t_app/create_book.txt	File placed directly under the app root rather than inside add_books_feature/, inconsistent with expected directory structure.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[PR by gaganaparvathi09] --> B[gagana_parvathi_book_app/\nadd_books_feature/]
    B --> C[create_book.txt ✅]
    B --> D[list_all_books.txt ✅]

    A --> E[Unintended Changes]
    E --> F[my_intro.txt\nOverwrites ChrisNijo/Pranav ❌]
    E --> G[Akash_A_book_app/ &\nakash_a_book_app/ deleted ❌]
    E --> H[list_all_books.txt\nDuplicate line appended ❌]
    E --> I[yourname_book_app/\nPlaceholder dir used ❌]
    E --> J[Nested duplicate path\naswika_grifith_book_app ❌]
    E --> K[keziah_mariam_raison_book_app/\nNano header in file ⚠️]
    E --> L[Athira_create_book.txt\nEmpty file at root ⚠️]

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    A[PR by gaganaparvathi09] --> B[gagana_parvathi_book_app/\nadd_books_feature/]
    B --> C[create_book.txt ✅]
    B --> D[list_all_books.txt ✅]

    A --> E[Unintended Changes]
    E --> F[my_intro.txt\nOverwrites ChrisNijo/Pranav ❌]
    E --> G[Akash_A_book_app/ &\nakash_a_book_app/ deleted ❌]
    E --> H[list_all_books.txt\nDuplicate line appended ❌]
    E --> I[yourname_book_app/\nPlaceholder dir used ❌]
    E --> J[Nested duplicate path\naswika_grifith_book_app ❌]
    E --> K[keziah_mariam_raison_book_app/\nNano header in file ⚠️]
    E --> L[Athira_create_book.txt\nEmpty file at root ⚠️]

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Comments Outside Diff (1)

1. Akash_A_book_app/add_books_feature/create_book.txt

   Deletion of another contributor's files

   Both Akash_A_book_app/add_books_feature/create_book.txt and akash_a_book_app/add_books_feature/create_book.txt are being deleted by this PR. These files belong to a different contributor (Akash A) and should not be touched. Removing them would erase their submitted work from the repository.

_{Reviews (1): Last reviewed commit: "Merge branch 'feature' into develop" | Re-trigger Greptile}

[greptile-apps]

Unauthorized modification of another contributor's file

my_intro.txt originally read "Hello from ChrisNijo" and this PR replaces it with "Hey there it's Pranav here aka Alien". This file belongs to a different contributor; this PR should only add or modify files within the author's own directory (gagana_parvathi_book_app/). Overwriting another person's intro file is an unintended side-effect that would permanently destroy their contribution.

[greptile-apps]

Duplicate line added to shared file

The line "List all books will list all books in ascending order." already exists on line 2 of this shared file. This PR adds the identical line again, resulting in a duplicate. This looks like an accidental double-commit of the same content.

[greptile-apps]

Placeholder template directory committed

Files are being added inside yourname_book_app/, which is clearly a template placeholder directory. Contributors are expected to replace yourname with their actual name. These files should be in a properly named directory (e.g. gagana_parvathi_book_app/), not in the template folder.

Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!

[greptile-apps]

Incorrectly nested duplicate path

This file is nested at aswika_grifith_book_app/add_books_feature/aswika_grifith_book_app/add_books_feature/list_all_books.txt — the full app path is duplicated in the directory tree. The correct location is aswika_grifith_book_app/add_books_feature/list_all_books.txt (which also exists in this PR). This creates an extraneous file at a wrong path that should be removed.

[greptile-apps]

Empty file at wrong location

Athira_create_book.txt is placed at the repository root rather than inside a proper athira_*_book_app/add_books_feature/ directory, and its content is entirely empty (just a newline). This file does not follow the expected directory structure of the project.

[greptile-apps]

Nano editor header line committed

The first line of this file contains GNU nano 8.5 create_book.txt — the title bar/header of the GNU nano text editor — followed by many blank lines before the actual content. This is an artifact of copying the terminal screen output instead of just the file content. The file should start directly with the intended text.